comfortableness vs ease

comfortableness and ease both are nouns.

Word	Noun	Adjective	Verb	Adverb
comfortableness	Yes	No	No	No
ease	Yes	No	Yes	No

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

comfortableness: a state of being relaxed and feeling no pain
ease: the condition of being comfortable or relieved (especially after being relieved of distress)

Other hyponyms of comfortableness include relief, solace, solacement, cosiness, coziness, snugness, convenience.

comfortableness (noun)	ease (noun)
a feeling of being at ease in a relationship	freedom from activity (work or strain or responsibility)
a state of being relaxed and feeling no pain	freedom from difficulty or hardship or effort
	freedom from constraint or embarrassment
	a freedom from financial difficulty that promotes a comfortable state
	the condition of being comfortable or relieved (especially after being relieved of distress)

comfortableness (verb)	ease (verb)
	lessen pain or discomfort; alleviate
	make easier
	lessen the intensity of or calm
	move gently or carefully