What preposition is not an adverb or adjective?

What are prepositional words that are not also adverbs or adjectives?

Prepositions are never adverbs or adjectives. However, nouns can be adjectives and sometimes verb. Prepositions show direction. They are words like under, around, beneath, over, inside, on, up, etc. Also included are the "f" words like of, if, from, for; FANBOYS is a way to remember the commonly used prepositions-for, and,nor,but, or, yet, and so.

What Lady Hawk says is not necessarily true. I think she misinterpreted your question.

Prepositions are a part of speech in and of itself. Lady Hawk is right when she says that prepositions are never adverbs or adjectives, but you are asking for the prepositional words.

Prepositional words can be adverbs and such, but not the other way around.

For instance "to" can also function as a preposition, yet it can also function as an adverb.

The best way to figure out which prepositional words can function as another part of speech is to use the dictionary.

Also, Lady Hawk is wrong when she uses the acronym FANBOYS. Those words are coordinating conjunctions. Not prepositions.