crenelation vs crenelate

crenelation is a noun but crenelate is not a noun.

Word	Noun	Adjective	Verb	Adverb
crenelation	Yes	No	No	No
crenelate	No	No	Yes	No

crenelation (noun)	crenelate (noun)
the action of constructing ramparts with gaps for firing guns or arrows
a rampart built around the top of a castle with regular gaps for firing arrows or guns

crenelation (verb)	crenelate (verb)
	supply with battlements