phytology vs coma

phytology and coma both are nouns.

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

phytology (noun)	coma (noun)
the branch of biology that studies plants	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)