crenellate vs crenelle

crenellate is not a noun while crenelle is a noun.

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

crenellate (noun)	crenelle (noun)
	a notch or open space between two merlons in a crenelated battlement
	one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)

crenellate (verb)	crenelle (verb)
supply with battlements