On can be a preposition, adverb, or adjective depending on the context. On is not a conjunction or a verb. On is most commonly used as a preposition of time or place. On can be used in a lot of different situations and contexts but it is mostly used as a preposition.

Is on a adverb or preposition?

On can be used in the following ways: as a preposition: She was lying on the floor.It happened on a hot summer's day. as an adverb: Put your clothes on now.

Is on an adjective or adverb?

As detailed above, 'on' can be an adverb, an adjective or a preposition. Adverb usage: turn the television on. Adverb usage: drive on, rock on.