elongation vs elongate

elongation is a noun but elongate is not a noun.

Word	Noun	Adjective	Verb	Adverb
elongation	Yes	No	No	No
elongate	No	Yes	Yes	No

elongation (noun)	elongate (noun)
the act of lengthening something
an addition to the length of something
the quality of being elongated

elongation (adjective)	elongate (adjective)
	having notably more length than width; being long and slender
	(of a leaf shape) long and narrow

elongation (verb)	elongate (verb)
	make long or longer by pulling and stretching