The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
The part of speech for "explicit" is an adjective.
The part of speech for "unfamiliar" is an adjective.
The part of speech for "indefinite" is an adjective.
verb
adverb
Are going is the present progressive tense of the verb go. It is called a verb phrase.
the subject
Frantic is an adjective
He's is a contraction of two parts of speech, he (pronoun) and is (verb) or has (verb). He's (he is) going to the store after he's (he has) finished the housework.
noun, its a person place or thing.
In this sentence "it" is used as the subject of an impersonal verb and is therefore a pronoun.
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is beneath