recrudesce vs pain

recrudesce is not a noun while pain is a noun.

Word	Noun	Adjective	Verb	Adverb
recrudesce	No	No	Yes	No
pain	Yes	No	Yes	No

As verbs, pain is a hypernym of recrudesce; that is, pain is a word with a broader meaning than recrudesce:

Other hypernyms of recrudesce include ail, trouble.

recrudesce (noun)	pain (noun)
	a somatic sensation of acute discomfort
	something or someone that causes trouble; a source of unhappiness
	emotional distress; a fundamental feeling that people try to avoid
	a symptom of some physical hurt or disorder

recrudesce (verb)	pain (verb)
become raw or open	cause bodily suffering to and make sick or indisposed
happen	cause emotional anguish or make miserable