Difference Between By vs. Through


Main Difference

Both the words are used as a preposition at times. But observing them deeply both differ largely in their meanings and usages. As both the words are a preposition in The English language, A real preposition is known as a term combined with some sort of noun or pronoun to exhibit location, position, time, or process. By is used to denote when someone wants to depict ‘”close to or near to something or someone or up to and beyond someone and something or when or when denoting at some place” .whereas through is commonly used pertaining to a process, procedure or course of action. To understand the difference between through and by, these two words are discussed and analyzed in detail as follows



It is used in many meanings and sentence structures. it is used as a preposition, adverb, adjective and sometimes in idioms. Most of them are listed below with examples.

1. It is used to depict the vicinity, nearness or closeness to someone or somethingfor example he is sitting by the door

2. it is used by means of or even through the medium of somethingfor example he entered by the front gate

3. It is used to when the period of time is mentionedfor example: by afternoon, by morning, by day, by dinner time, by 2 a.m, by 3 p.m

4. It is used to show the magnitude, extent or quantity or amount of somethingfor example, He is smarter than his brother by 2 inches.


5. It is used to show the degree of past, or when something is overfor example, Gone are the days, in past gone by

6. it is used to put something to put asidefor example: Put your work by and let us go for the shopping

7. it is used as the purpose term to point out consecutive units as well as stepsfor example large by large or walk three by three

8. It is used in mathematics to show the multiplication and division.for example: divide ten by seven, multiply seven by six

9. It is also used to show the point of opinion or degree of agreementfor example, it is ok by you?


Through can also be used as a preposition, adjective and adverb. In a preposition followed by a noun like they were passing through a jungle. In an adverb through is used without following a noun like there is a tiny orifice in the umbrella from where the rain is coming through. it is also used as adjectives like he is a through some situation. Its usage and sentence structure are listed below.


1. It is used in the sense of cutting something into piecesfor example, A worker had been drilling through the cement wall structure.

2. The bottoms associated with their sneakers have been almost worn through in areas.Employees had slice through a power wire while they were digging.

3. It is used to indicate the period of timefor example, he was in love with her all through her life.

4. It is applied as a function word to point out motion or mobilityfor example, he flew through the clouds in the aeroplane

5. it is also used to indicate the particular set of circumstancesfor example, the pain he was suffering put him through the hell.

Key Differences

  1. By is used to describe the specific time period whereas through is used to denote the time during the whole period
  2. By is used to indicate the location which is nearby whereas through indicates one location to another
  3. By term is used to depict the origin or result of something whereas through is used in the manner in which a task is fulfilled.
  4. By is used to define the amount, size or margin whereas through is used to indicate the extent of something
  5. By can be used in multiplicative terms whereas through cannot use in this perspective.

Comparison Video