glaciation vs glaciate

glaciation is a noun but glaciate is not a noun.

Word	Noun	Adjective	Verb	Adverb
glaciation	Yes	No	No	No
glaciate	No	No	Yes	No

glaciation (noun)	glaciate (noun)
the process of covering the earth with glaciers or masses of ice
the condition of being covered with glaciers or masses of ice; the result of glacial action

glaciation (verb)	glaciate (verb)
	become frozen and covered with glaciers
	cover with ice or snow or a glacier