aboulia vs mental state

aboulia and mental state both are nouns.

Word	Noun	Adjective	Verb	Adverb
aboulia	Yes	No	No	No
mental state	Yes	No	No	No

As nouns, mental state is a hypernym of aboulia; that is, mental state is a word with a broader meaning than aboulia:

aboulia: a loss of will power
mental state: (psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic

Other hypernyms of aboulia include mental condition, psychological condition, psychological state.

aboulia (noun)	mental state (noun)
a loss of will power	(psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic