famishment vs hungriness

famishment and hungriness both are nouns.

Word	Noun	Adjective	Verb	Adverb
famishment	Yes	No	No	No
hungriness	Yes	No	No	No

As nouns, hungriness is a hypernym of famishment; that is, hungriness is a word with a broader meaning than famishment:

famishment: a state of extreme hunger resulting from lack of essential nutrients over a prolonged period
hungriness: a physiological need for food; the consequence of food deprivation

Other hypernyms of famishment include hunger.

famishment (noun)	hungriness (noun)
a state of extreme hunger resulting from lack of essential nutrients over a prolonged period	strong desire for something (not food or drink)
	prolonged unfulfilled desire or need
	a physiological need for food; the consequence of food deprivation