Prepositions are words that show the relationship between a noun or pronoun and another word in the sentence. Examples of prepositions include:
* to
* from
* at
* on
* in
* with
* by
You can use "similar" in a sentence with a preposition:
* The two paintings are similar to each other.
* This dress is similar in style to the one I saw yesterday.
In these sentences, "to" and "in" are prepositions, but "similar" is the adjective describing the noun ("paintings" and "dress").