Bag vs. Backpack

Difference Between Bag and Backpack
Bagnoun
A flexible container made of cloth, paper, plastic, etc.
Backpacknoun
A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking, or on a student's back when carrying books.
Bagnoun
(informal) A handbag
Backpacknoun
A similarly placed item containing a parachute or other life-support equipment.
Bagnoun
A suitcase.
Backpackverb
(intransitive) to hike and camp overnight in backcountry with one's gear carried in a backpack
Bagnoun
A schoolbag, especially a backpack.
Backpackverb
(intransitive) to engage in low-cost, generally urban, travel with minimal luggage and frugal accommodations
Bagnoun
One’s preference.
Acid House is not my bag: I prefer the more traditional styles of music.Backpackverb
(transitive) to place or carry (an item or items) in a backpack
Bagnoun
(derogatory) An ugly woman.
Backpacknoun
a bag carried by a strap on your back or shoulder
Bagnoun
(baseball) The cloth-covered pillow used for first, second, and third base.
The grounder hit the bag and bounced over the fielder’s head.Backpackverb
hike with a backpack;
Every summer they are backpacking in the RockiesBagnoun
(baseball) First, second, or third base.
He headed back to the bag.Bagnoun
(preceded by "the") A breathalyzer, so named because it formerly had a plastic bag over the end to measure a set amount of breath.
Bagnoun
(mathematics) A collection of objects, disregarding order, but (unlike a set) in which elements may be repeated.
If one has a bag of three apples and the letter 'a' is taken to denote 'apple', then such bag could be represented symbolically as {a,a,a}. Note that in an ordinary context, when talking about a bag of apples, one does not care about identifying the individual apples, although one might be interested in distinguishing apples by species, for example, letting 'r' denote 'red apple' and 'g' denote 'green apple', then a bag of three red apples and two green apples could be denoted as {r,r,r,g,g}.Bagnoun
A sac in animal bodies, containing some fluid or other substance.
the bag of poison in the mouth of some serpentsthe bag of a cowBagnoun
A sort of silken purse formerly tied about men's hair behind, by way of ornament.
Bagnoun
The quantity of game bagged in a hunt.
Bagnoun
A scrotum.
Bagnoun
(UK) A unit of measure of cement equal to 94 pounds.
Bagverb
To put into a bag.
Bagverb
(informal) To catch or kill, especially when fishing or hunting.
We bagged three deer yesterday.Bagverb
To gain possession of something, or to make first claim on something.
Bagverb
(transitive) To furnish or load with a bag.
Bagverb
To bring a woman one met on the street with one.
Bagverb
To laugh uncontrollably.
Bagverb
To criticise sarcastically.
Bagverb
(medicine) To provide artificial ventilation with a bag valve mask (BVM) resuscitator.
Bagverb
To swell or hang down like a full bag.
The skin bags from containing morbid matter.The brisk wind bagged the sails.Bagverb
To hang like an empty bag.
His trousers bag at the knees.Bagverb
To swell with arrogance.
Bagverb
To become pregnant.
Bagnoun
a flexible container with a single opening;
he stuffed his laundry into a large bagBagnoun
the quantity of game taken in a particular period (usually by one person);
his bag included two deerBagnoun
place that runner must touch before scoring;
he scrambled to get back to the bagBagnoun
a bag used for carrying money and small personal items or accessories (especially by women);
she reached into her bag and found a combBagnoun
the quantity that a bag will hold;
he ate a large bag of popcornBagnoun
a portable rectangular traveling bag for carrying clothes;
he carried his small bag onto the plane with himBagnoun
an ugly or ill-tempered woman;
he was romancing the old bag for her moneyBagnoun
mammary gland of bovids (cows and sheep and goats)
Bagnoun
an activity that you like or at which you are superior;
chemistry is not my cup of teahis bag now is learning to play golfmarriage was scarcely his dishBagverb
capture or kill, as in hunting;
bag a few pheasantsBagverb
hang loosely, like an empty bag
Bagverb
bulge out; form a bulge outward, or be so full as to appear to bulge
Bagverb
take unlawfully
Bagverb
put into a bag;
The supermarket clerk bagged the groceries