No, while is a conjunction. The word "awhile" is an adverb.
No, poor is not an adverb. Poor is a adjective, and poorly is an adverb while poorness is noun.
No. Criminal is an adjective, while "criminally" is the adverb form.
This is a Phrasal adverb.
The term "oftenly" is not a standard adverb in English. While some people may use it informally, "often" is the preferred adverb to indicate frequency.
There is no direct adverb for the noun vacancy (state of being empty or unoccupied). While the related adjective vacant has the adverb form vacantly, the adverb has a different connotation (lack of attention or awareness).
"Wrong" can function as both an adjective and an adverb. As an adjective, it describes a noun or pronoun, while as an adverb, it describes a verb, adjective, or another adverb.
Clear would be an adjective while clearly would be an adverb.
Occasionally is an adverb. It has the synonyms infrequently, sporadically, or sometimes.
It may be an averb, and it may be an adjective. Wait a while longer. (adverb) She didn't stay longer than midnight. (adverb) The Volga is longer than the Don. (adjective)
It is an adverb; the adjective form (describing a noun) is "awful," while the adverb form, "awfully," would describe a verb.
Yes. When awhile is spelled as one word, it is an adverb meaning for a time.*The two word form "a while" represents an article and a noun, "while" being an unspecified time.
No. The word "good" is the usual adjective form, while "well" is the adverb form, and very is always an adverb.