minibar vs buffet

minibar and buffet both are nouns.

Word	Noun	Adjective	Verb	Adverb
minibar	Yes	No	No	No
buffet	Yes	No	Yes	No

As nouns, buffet is a hypernym of minibar; that is, buffet is a word with a broader meaning than minibar:

minibar: sideboard with compartments for holding bottles
buffet: a piece of furniture that stands at the side of a dining room; has shelves and drawers

Other hypernyms of minibar include counter, sideboard.

minibar (noun)	buffet (noun)
sideboard with compartments for holding bottles	a piece of furniture that stands at the side of a dining room; has shelves and drawers
	usually inexpensive bar
	a meal set out on a buffet at which guests help themselves

minibar (verb)	buffet (verb)
	strike against forcefully
	strike, beat repeatedly