coma vs comal

coma is a noun but comal is not a noun.

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

coma (noun)	comal (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)

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