No, they are two different parts of speech. But there are many words that are preopositions that can also stand alone as adverbs.
Prepositional phrases can serve as adjectives or as adverbs, depending on the words that they refer to.
It is an adverb. It cannot be a preposition. It may be considered a noun in some uses.
On can be an adverb a preposition or an adjective. adverb - Turn the lights on. adjective - The switch is in the on position. preposition - I'll see you on Sunday.
No. Almost is an adverb. It is not used as a preposition.
It can be either. If it takes a noun as an object, it is a preposition. It if stands alone or with other adverbs, it is an adverb. It can, rarely, be an adjective.
It can be either. If it has a noun as its object, it is a preposition. Standing alone, it is an adverb (and possibly an adjective). It can also be a conjunction.
No, it is not a preposition. Tall is an adjective and possibly an adverb.
It is never an adverb. It is always a preposition. The word "within" can be an adverb or a preposition, and the word "forthwith" (immediately) is an adverb.
It is never an adverb. It is always a preposition. The word "within" can be an adverb or a preposition, and the word "forthwith" (immediately) is an adverb.
preposition
Adverb: I had a hat on. Preposition: I didn't have any money on me.
In this adverb form of "with" meaning "accompanying," along is an adverb and with is a preposition.
Yes "throughout" is a preposition.Yes, it can be a preposition. But it can also be an adverb by itself.
No, it is not a preposition. It is an adverb.
No. It is not a preposition. Twice is an adverb.
It can be either. It can be a preposition, or it can be an adverb (walking about), or even possibly an adjective (up and about).
No, it is not a preposition. Usually is an adverb.
No, it is not a preposition. Usually is an adverb.