The main differences that exists between Cold and Flu is the presence of fever, aches, chills, tiredness, coughing, headache, and sneezing.
Cold
Having a low temperature
Cold water.
Cold
Being at a temperature that is less than what is required or what is normal
Cold oatmeal.
Flu
Any of several infections that affect the respiratory or gastrointestinal tract and are caused by viruses other than the influenza virus.
Cold
Chilled by refrigeration or ice
Cold beer.
Flu
Influenza.
Catch flu
Get over the flu
Transmit flu
Cold
Feeling no warmth; uncomfortably chilled
We were cold sitting by the drafty windows.
Flu
(informal) Stomach flu.
Cold
Appearing to be dead; unconscious
Found him out cold on the floor.
Flu
An acute febrile highly contagious viral disease
Cold
Dead
Was cold in his grave.
Cold
Lacking emotion; objective
Cold logic.
Cold
Having little appeal to the senses or feelings
A cold decor.
Cold
Designating or being in a tone or color, such as pale gray, that suggests little warmth.
Cold
Not affectionate or friendly; aloof
A cold person.
A cold nod.
Cold
Exhibiting or feeling no enthusiasm
A cold audience.
A cold response to the new play.
A concert that left me cold.
Cold
Devoid of sexual desire; frigid.
Cold
Having lost all freshness or vividness through passage of time
Dogs attempting to catch a cold scent.
Cold
So intense as to be almost uncontrollable
Cold fury.
Cold
Characterized by repeated failure, especially in a sport or competitive activity
The team fell into a slump of cold shooting.
Cold
To an unqualified degree; totally
Was cold sober.
Cold
With complete finality
We turned him down cold.
Cold
Without advance preparation or introduction
Took the exam cold and passed.
Walked in cold and got the new job.
Cold
Relative lack of warmth
Cold slows down chemical reactions.
Cold
The sensation resulting from lack of warmth; chill.
Cold
A condition of low air temperature; cold weather
Went out into the cold and got a chill.
Cold
A viral infection characterized by inflammation of the mucous membranes lining the upper respiratory passages and usually accompanied by malaise, fever, chills, coughing, and sneezing. Also called common cold, coryza.
Cold
(of a thing) Having a low temperature.
A cold wind whistled through the trees.
Cold
(of the weather) Causing the air to be cold.
The forecast is that it will be very cold today.
Cold
(of a person or animal) Feeling the sensation of coldness, especially to the point of discomfort.
She was so cold she was shivering.
Cold
Unfriendly; emotionally distant or unfeeling.
She shot me a cold glance before turning her back.
Cold
Dispassionate; not prejudiced or partisan; impartial.
Let's look at this tomorrow with a cold head.
He's a nice guy, but the cold facts say we should fire him.
The cold truth is that states rarely undertake military action unless their national interests are at stake.
Cold
Completely unprepared; without introduction.
He was assigned cold calls for the first three months.
Cold
Unconscious or deeply asleep; deprived of the metaphorical heat associated with life or consciousness.
I knocked him out cold.
After one more beer he passed out cold.
Cold
(usually with "have" or "know" transitively) Perfectly, exactly, completely; by heart; down pat.
Practice your music scales until you know them cold.
Try both these maneuvers until you have them cold and can do them in the dark without thinking.
Rehearse your lines until you have them down cold.
Keep that list in front of you, or memorize it cold.
Cold
(usually with "have" transitively) Cornered; done for.
With that receipt, we have them cold for fraud.
Criminal interrogation. Initially they will dream up explanations faster than you could ever do so, but when they become fatigued, often they will acknowledge that you have them cold.
Cold
(obsolete) Not pungent or acrid.
Cold
(obsolete) Unexciting; dull; uninteresting.
Cold
Affecting the sense of smell (as of hunting dogs) only feebly; having lost its odour.
A cold scent
Cold
(obsolete) Not sensitive; not acute.
Cold
Distant; said, in the game of hunting for some object, of a seeker remote from the thing concealed. Compare warm and hot.
You're cold … getting warmer … hot! You've found it!
Cold
(painting) Having a bluish effect; not warm in colour.
Cold
(databases) Rarely used or accessed, and thus able to be relegated to slower storage.
Cold
(informal) Without compassion; heartless; ruthless.
I can't believe she said that...that was cold!
Cold
(informal) Not radioactive.
Cold
(firearm) Not loaded with a round of live ammunition.
Cold
Without electrical power being supplied.
Cold
A condition of low temperature.
Come in, out of the cold.
Cold
A harsh place; a place of abandonment.
The former politician was left out in the cold after his friends deserted him.
Cold
(medicine) A common, usually harmless, viral illness, usually with congestion of the nasal passages and sometimes fever.
I caught a miserable cold and had to stay home for a week
Cold
(slang) rheum, sleepy dust
Cold
At a low temperature.
The steel was processed cold.
Cold
Without preparation.
The speaker went in cold and floundered for a topic.
Cold
In a cold, frank, or realistically honest manner.
Cold
Deprived of heat, or having a low temperature; not warm or hot; gelid; frigid.
Cold
Lacking the sensation of warmth; suffering from the absence of heat; chilly; shivering; as, to be cold.
Cold
Not pungent or acrid.
Cold
Wanting in ardor, intensity, warmth, zeal, or passion; spiritless; unconcerned; reserved.
A cold and unconcerned spectator.
No cold relation is a zealous citizen.
Cold
Unwelcome; disagreeable; unsatisfactory.
Cold
Wanting in power to excite; dull; uninteresting.
What a deal of cold business doth a man misspend the better part of life in!
The jest grows cold . . . when in comes on in a second scene.
Cold
Affecting the sense of smell (as of hunting dogs) but feebly; having lost its odor; as, a cold scent.
Cold
Not sensitive; not acute.
Smell this business with a sense as coldAs is a dead man's nose.
Cold
Distant; - said, in the game of hunting for some object, of a seeker remote from the thing concealed.
Cold
Having a bluish effect. Cf. Warm, 8.
He was slain in cold blood after the fight was over.
Cold
The relative absence of heat or warmth.
Cold
The sensation produced by the escape of heat; chilliness or chillness.
When she saw her lord prepared to part,A deadly cold ran shivering to her heart.
Cold
A morbid state of the animal system produced by exposure to cold or dampness; a catarrh.
Cold
A mild viral infection involving the nose and respiratory passages (but not the lungs);
Will they never find a cure for the common cold?
Cold
The absence of heat;
The coldness made our breath visible
Come in out of the cold
Cold is a vasoconstrictor
Cold
The sensation produced by low temperatures;
He shivered from the cold
The cold helped clear his head
Cold
Used of physical coldness; having a low or inadequate temperature or feeling a sensation of coldness or having been made cold by e.g. ice or refrigeration;
A cold climate
A cold room
Dinner has gotten cold
Cold fingers
If you are cold, turn up the heat
A cold beer
Cold
Extended meanings; especially of psychological coldness; without human warmth or emotion;
A cold unfriendly nod
A cold and unaffectionate person
A cold impersonal manner
Cold logic
The concert left me cold
Cold
Having lost freshness through passage of time;
A cold trail
Dogs attempting to catch a cold scent
Cold
(color) giving no sensation of warmth;
A cold bluish gray
Cold
Marked by errorless familiarity;
Had her lines cold before rehearsals started
Cold
No longer new; uninteresting;
Cold (or stale) news
Cold
So intense as to be almost uncontrollable;
Cold fury gripped him
Cold
Sexually unresponsive;
Was cold to his advances
A frigid woman
Cold
Without compunction or human feeling;
In cold blood
Cold-blooded killing
Insensate destruction
Cold
Feeling or showing no enthusiasm;
A cold audience
A cold response to the new play
Cold
Unconscious from a blow or shock or intoxication;
The boxer was out cold
Pass out cold
Cold
Of a seeker; far from the object sought
Cold
Lacking the warmth of life;
Cold in his grave
Cold is a common infection of the nose and throat. This primarily affects the nose. Coughing, sore throat, runny nose, sneezing, and fever are apparent symptoms of cold. It usually lasts to seven to ten days. However, some symptoms of cold lasts up to three weeks. Over 200 virus strains are the reason behind cold in which ‘rhinoviruses’ are the most common. Common cold mostly affects the nose than throat, and sinuses and sometimes affects both eyes as well via conjunctivitis. The basic reason behind cold is the resistant response to the infection instead of tissue destruction by the viruses themselves.
Flu is also a common but serious kind of infection of the upper body. It is caused by ‘influenza virus’. It can be range from mild to severe. High fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling fatigue are common symptoms of flu. These symptoms exposed after two days of exposure of virus and mostly last than a week. However, cough may last for over two weeks. There may be nausea and vomiting in children but these are not common in adults. Flu can be occur because of previous bad health such as heart failure or asthma. Flu virus is usually spread through air or if a person touch any surface infected by virus and then touch his mouth or eyes.