‘After’ is primarily used as a preposition in the English language. It indicates a relationship in time or space, showing that something follows another in a sequence.
For instance, in the sentence ‘We went for a walk after dinner,’ the word ‘after’ connects the action of walking to the time frame of having dinner. It tells us when the walk happened, providing a clear temporal relationship.
In some contexts, ‘after’ can also function as a conjunction, as in ‘I will call you after I get home.’ Here, it connects two clauses, showing that one action will occur following another.
In summary, while ‘after’ is mostly a preposition, it can also serve as a conjunction depending on its use in a sentence.