The word adverb is a noun.
adverb
The word "merrily" is an adverb.
The word "obviously" is an adverb.
The word 'where' is an adverb.
The word 'where' is an adverb.
"Where" can function as both an adverb and a conjunction, depending on its usage in a sentence.
Solemnly is an adverb.
The word pitifully is an adverb.
The word yesterday is an adverb.
The word "critically" is an adverb.
The word "smugly" is an adverb.
Softly is an adverb.