Working is a noun, but it could be an adjective you just have to look closely. It depends on the sentence.
It depends on how you are using the word. Work can be a noun (He was late for work) and a verb (How do you work this thing). With an ending, it can also be an adjective (It was a working part).
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
Working is a verb. It describes an action.
"(Have been working)" is a verb phrase. It is composed of the auxiliary verbs "have" and "been" alongside the main verb "working."
"Hard-working" is an adjective. It describes someone who puts in a lot of effort and diligence towards their work or tasks.
It depends on how you are using the word. Work can be a noun (He was late for work) and a verb (How do you work this thing). With an ending, it can also be an adjective (It was a working part).
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "twirl" is a verb.