boniness vs emaciation

boniness and emaciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
boniness	Yes	No	No	No
emaciation	Yes	No	No	No

As nouns, boniness and emaciation are synonyms defined as:

boniness and emaciation: extreme leanness (usually caused by starvation or disease)

Other synonyms of boniness include bonyness, gauntness, maceration.

boniness (noun)	emaciation (noun)
extreme leanness (usually caused by starvation or disease)	extreme leanness (usually caused by starvation or disease)