minimum wage vs earnings

minimum wage and earnings both are nouns.

Word	Noun	Adjective	Verb	Adverb
minimum wage	Yes	No	No	No
earnings	Yes	No	No	No

As nouns, earnings is a hypernym of minimum wage; that is, earnings is a word with a broader meaning than minimum wage:

minimum wage: the lowest wage that an employer is allowed to pay; determined by contract or by law
earnings: something that remunerates

Other hypernyms of minimum wage include pay, remuneration, salary, wage.

minimum wage (noun)	earnings (noun)
the lowest wage that an employer is allowed to pay; determined by contract or by law	something that remunerates
	the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)