The word hiding is a verb, the present participle of the verb to hide. The present participle of a verb is also a gerund (verbal noun), and an adjective. Example uses:
Verb: "I am hiding from you."
Noun: "Hiding is one way to deal with the problem."
Adjective: "The hiding boy winked at me to stay quite."
adverb
Difficult is an adjective.
Adverb
The word muddy is an adjective. The adverb form (muddily) is very rarely used.
Yes, gracefully is an adverb, from the adjective graceful.
Dark can be an adjective or a noun. Darkly is an adverb.
Adverb.Here is an adverb, not an adjective.
its an adverb an adjective is a descriptive word an adverb is a feeling
An adverb describes a verb, an adjective or another adverb.
It can be an adjective OR an adverb. adjective -- You dog is a friendly dog adverb -- She always talks friendly to me
Nervous is an adjective. The adverb form is nervously.
Yes, "especially" can function as both an adverb and an adjective. As an adverb, it modifies a verb, an adjective, another adverb, or a sentence. As an adjective, it describes a noun.
'The' is neither an adjective nor an adverb. It is an article.
No, it is not. It is an adverb, the adverb form of the adjective unsteady.
Comprehensible is an adjective. The adverb is comprehensibly.
No, it is an adverb. It is the adverb form of the adjective perfect.
Silently is an adverb. The adjective is silent.