bare bones vs inwardness

bare bones and inwardness both are nouns.

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

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

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

Other hypernyms of bare bones include center, centre, core, essence, gist, heart, heart and soul, kernel, marrow, meat, nitty-gritty, nub, pith, substance, sum.

bare bones (noun)	inwardness (noun)
(plural) the most basic facts or elements	the quality or state of being inward or internal
	preoccupation with what concerns human inner nature (especially ethical or ideological values)
	preoccupation especially with one's attitudes and ethical or ideological values
	the choicest or most essential or most vital part of some idea or experience