unsubdivided vs botany

unsubdivided is not a noun while botany is a noun.

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

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

unsubdivided (adjective)	botany (adjective)
(botany) of leaf shapes; of leaves having no divisions or subdivisions