intumesce vs intumescency

intumesce is not a noun while intumescency is a noun.

Word	Noun	Adjective	Verb	Adverb
intumesce	No	No	Yes	No
intumescency	Yes	No	No	No

intumesce (noun)	intumescency (noun)
	the increase in volume of certain substances when they are heated (often accompanied by release of water)
	swelling up with blood or other fluids (as with congestion)

intumesce (verb)	intumescency (verb)
expand abnormally
move upwards in bubbles, as from the effect of heating; also used metaphorically