suffering vs anguish

suffering and anguish both are nouns.

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

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

Other hyponyms of suffering include torment, torture, self-torment, self-torture, tsoris, wound.

suffering (noun)	anguish (noun)
feelings of mental or physical pain	extreme mental distress
psychological suffering	extreme distress of body or mind
a state of acute pain
misery resulting from affliction

suffering (adjective)	anguish (adjective)
troubled by pain or loss
very unhappy; full of misery

suffering (verb)	anguish (verb)
	cause emotional anguish or make miserable
	suffer great pains or distress