killing vs profits

killing and profits both are nouns.

Word	Noun	Adjective	Verb	Adverb
killing	Yes	Yes	No	No
profits	Yes	No	No	No

As nouns, profits is a hypernym of killing; that is, profits is a word with a broader meaning than killing:

killing: a very large profit
profits: the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)

Other hypernyms of killing include earnings, lucre, net, net income, net profit, profit.

killing (noun)	profits (noun)
the act of terminating a life	the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)
an event that causes someone to die	something won (especially money)
a very large profit

killing (adjective)	profits (adjective)
very funny