comfy vs cozy

comfy is not a noun while cozy is a noun.

Word	Noun	Adjective	Verb	Adverb
comfy	No	Yes	No	No
cozy	Yes	Yes	No	No

comfy (noun)	cozy (noun)
	a padded cloth covering to keep a teapot warm

comfy (adjective)	cozy (adjective)
providing or experiencing physical well-being or relief (`comfy' is informal)	suggesting connivance
	enjoying or affording comforting warmth and shelter especially in a small space
	having or fostering a warm or friendly and informal atmosphere