excruciate vs pain

excruciate is not a noun while pain is a noun.

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

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

Other hypernyms of excruciate include anguish, hurt.

excruciate (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

excruciate (verb)	pain (verb)
subject to torture	cause bodily suffering to and make sick or indisposed
torment emotionally or mentally	cause emotional anguish or make miserable