comal vs coma

comal is not a noun while coma is a noun.

Word	Noun	Adjective	Verb	Adverb
comal	No	Yes	No	No
coma	Yes	No	No	No

comal (noun)	coma (noun)
	a state of deep and often prolonged unconsciousness; usually the result of disease or injury
	(astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet; forms as the comet approaches the sun and is warmed
	(botany) a usually terminal tuft of bracts (as in the pineapple) or tuft of hairs (especially on certain seeds)

comal (adjective)	coma (adjective)
of certain seeds (such as cotton) having a tuft or tufts of hair