profit vs earn

profit is a noun but earn is not a noun.

Word	Noun	Adjective	Verb	Adverb
profit	Yes	No	Yes	No
earn	No	No	Yes	No

As verbs, earn is a hypernym of profit; that is, earn is a word with a broader meaning than profit:

profit: make a profit; gain money or materially
earn: earn on some commercial or business transaction; earn as salary or wages

Other hypernyms of profit include bring in, clear, gain, make, pull in, realise, realize, take in.

profit (noun)	earn (noun)
the advantageous quality of being beneficial
the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)

profit (verb)	earn (verb)
make a profit; gain money or materially	earn on some commercial or business transaction; earn as salary or wages
derive a benefit from	acquire or deserve by one's efforts or actions