extravasate vs extravasation

extravasate is not a noun while extravasation is a noun.

Word	Noun	Adjective	Verb	Adverb
extravasate	No	No	Yes	No
extravasation	Yes	No	No	No

extravasate (noun)	extravasation (noun)
	the process of exuding or passing out of a vessel into surrounding tissues; said of blood or lymph or urine
	(of volcanoes) pouring out fumes or lava (or a deposit so formed)
	an extravasated liquid (blood or lymph or urine); the product of extravasation

extravasate (verb)	extravasation (verb)
cause molten material, such as lava, to pour forth
become active and spew forth lava and rocks
force out or cause to escape from a proper vessel or channel