earnings vs lucre

earnings and lucre both are nouns.

Word	Noun	Adjective	Verb	Adverb
earnings	Yes	No	No	No
lucre	Yes	No	No	No

As nouns, earnings and lucre are synonyms defined as:

earnings and lucre: the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)

Other synonyms of earnings include net, net income, net profit, profit, profits.

earnings (noun)	lucre (noun)
something that remunerates	the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)
the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)	informal terms for money