bare bones vs nub

bare bones and nub both are nouns.

Word	Noun	Adjective	Verb	Adverb
bare bones	Yes	No	No	No
nub	Yes	No	No	No

As nouns, nub is a hypernym of bare bones; that is, nub is a word with a broader meaning than bare bones:

bare bones: (plural) the most basic facts or elements
nub: the choicest or most essential or most vital part of some idea or experience

bare bones (noun)	nub (noun)
(plural) the most basic facts or elements	the choicest or most essential or most vital part of some idea or experience
	a small piece
	a small lump or protuberance