botany vs precocious

botany is a noun but precocious is not a noun.

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

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

botany (adjective)	precocious (adjective)
	characterized by or characteristic of exceptionally early development or maturity (especially in mental aptitude)
	appearing or developing early