exogamic vs botany

exogamic is not a noun while botany is a noun.

Word	Noun	Adjective	Verb	Adverb
exogamic	No	Yes	No	No
botany	Yes	No	No	No

exogamic (noun)	botany (noun)
	the branch of biology that studies plants
	all the plant life in a particular region or period

exogamic (adjective)	botany (adjective)
pertaining to or characterized by the custom of marrying only outside the limits of a clan or tribe
characterized by or fit for fertilization by a flower that is not closely related