boss vs supervisor

boss and supervisor both are nouns.

Word	Noun	Adjective	Verb	Adverb
boss	Yes	Yes	Yes	No
supervisor	Yes	No	No	No

As nouns, supervisor is a hypernym of boss; that is, supervisor is a word with a broader meaning than boss:

Other hypernyms of boss include adult male, man.

boss (noun)	supervisor (noun)
a circular rounded projection or protuberance	a program that controls the execution of other programs
a person responsible for hiring workers	one who supervises or has charge and direction of
a person who exercises control over workers
a leader in a political party who controls votes and dictates appointments
a person who exercises control and makes decisions

boss (adjective)	supervisor (adjective)
exceptionally good

boss (verb)	supervisor (verb)
raise in a relief