minimum wage vs salary

minimum wage and salary both are nouns.

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

As nouns, salary is a hypernym of minimum wage; that is, salary 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
salary: something that remunerates

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

minimum wage (noun)	salary (noun)
the lowest wage that an employer is allowed to pay; determined by contract or by law	something that remunerates