The word "profit" can function as both a noun and a verb. As a noun, it refers to the financial gain obtained after subtracting expenses from revenue. As a verb, it means to gain an advantage or benefit from something. The context in which it is used determines its part of speech.
Dividend
Profit is what is left over from a business after the bills are paid. without profit the company can not afford to re-invest in capital or have money to pay stockholders
noun
Pecuniary is an adjective.
Monopoly is a noun.
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.
The part of speech of "came" is a verb.
The part of speech for "breezy" is an adjective.
The part of speech for "buried" is a verb.
The part of speech for "indefinite" is an adjective.