While both the words are used for comparison, the difference between the two is a small one. The basic bone of contention for the usage of these two words is because of the fact that ‘like’ is a preposition and ‘as’ is conjunction. This is often forgotten and ‘like’ is used as a conjunction.
What is a preposition and what is a conjunction?
Definition of Prepositions: Prepositions are words governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause, as in ‘the person on the platform’, ‘he arrived after lunch’.
Definition of Conjunctions: Conjunctions are words used to connect clauses or sentences or to coordinate words in the same clause/a connecting word.
Grammar: Concept & Rules
When to use ‘Like’ and ‘As’:
In case you are comparing clauses (a clause is a part of a sentence that contains a subject and a verb), you must use ‘as’. On the other hand, ‘like’ is used when the comparison only includes a subject.
Example:
Usage of ‘Like’: “Tarun cooks like his father.”
Usage of ‘As’: “Tarun cooks as his father does.”
Example for incorrect usage: “Tarun cooks as his father does.”
Usage of ‘Like’: “Tarun cooks like his father.”
Usage of ‘As’: “Tarun cooks as his father does.”
Example for incorrect usage: “Tarun cooks as his father does.”
The last sentence is incorrect as a verb; i.e. ‘does’ cannot be used when we use like.
Example:
Incorrect: Vipin and Nitin, like their father Hiten, are extremely short..
Correct: Vipin and Nitin, like their father Hiten, are extremely short.
Incorrect: Vipin and Nitin, like their father Hiten, are extremely short..
Correct: Vipin and Nitin, like their father Hiten, are extremely short.