anguish vs excruciate

anguish is a noun but excruciate is not a noun.

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

As verbs, excruciate is a hyponym of anguish; that is, excruciate is a word with a more specific, narrower meaning than anguish:

Other hyponyms of anguish include break someone's heart, agonise, agonize, try, rack, torment, torture.

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

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