easiness vs languor

easiness and languor both are nouns.

Word	Noun	Adjective	Verb	Adverb
easiness	Yes	No	No	No
languor	Yes	No	No	No

As nouns, languor is a hyponym of easiness; that is, languor is a word with a more specific, narrower meaning than easiness:

easiness: a feeling of refreshing tranquility and an absence of tension or worry
languor: a relaxed comfortable feeling

Other hyponyms of easiness include dreaminess.

easiness (noun)	languor (noun)
the quality of being easy in behavior or style	inactivity; showing an unusual lack of energy
freedom from difficulty or hardship or effort	a relaxed comfortable feeling
a feeling of refreshing tranquility and an absence of tension or worry	a feeling of lack of interest or energy
	oppressively still air