crenellate vs crenellation

crenellate is not a noun while crenellation is a noun.

Word	Noun	Adjective	Verb	Adverb
crenellate	No	No	Yes	No
crenellation	Yes	No	No	No

crenellate (noun)	crenellation (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

crenellate (verb)	crenellation (verb)
supply with battlements