cozy vs comfy

cozy is a noun but comfy is not a noun.

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

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

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