geology vs stratify

geology is a noun but stratify is not a noun.

Word	Noun	Adjective	Verb	Adverb
geology	Yes	No	No	No
stratify	No	No	Yes	No

geology (noun)	stratify (noun)
a science that deals with the history of the earth as recorded in rocks

geology (verb)	stratify (verb)
	render fertile and preserve by placing between layers of earth or sand
	form layers or strata
	form, arrange, or deposit in layers
	divide society into social classes or castes
	develop different social levels, classes, or castes