emaciation vs boniness

emaciation and boniness both are nouns.

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

As nouns, emaciation and boniness are synonyms defined as:

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

Other synonyms of emaciation include bonyness, gauntness, maceration.

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