excruciate vs anguish

excruciate is not a noun while anguish is a noun.

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

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

Other hypernyms of excruciate include hurt, pain.

excruciate (noun)	anguish (noun)
	extreme mental distress
	extreme distress of body or mind

excruciate (verb)	anguish (verb)
subject to torture	cause emotional anguish or make miserable
torment emotionally or mentally	suffer great pains or distress