intestine vs viscus

intestine and viscus both are nouns.

Word	Noun	Adjective	Verb	Adverb
intestine	Yes	No	No	No
viscus	Yes	No	No	No

As nouns, viscus is a hypernym of intestine; that is, viscus is a word with a broader meaning than intestine:

intestine: the part of the alimentary canal between the stomach and the anus
viscus: a main organ that is situated inside the body

Other hypernyms of intestine include internal organ.

intestine (noun)	viscus (noun)
the part of the alimentary canal between the stomach and the anus	a main organ that is situated inside the body