gut vs viscus

gut and viscus both are nouns.

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

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

Other hypernyms of gut include internal organ.

gut (noun)	viscus (noun)
a strong cord made from the intestines of sheep and used in surgery	a main organ that is situated inside the body
the part of the alimentary canal between the stomach and the anus
a narrow channel or strait

gut (verb)	viscus (verb)
remove the guts of
empty completely; destroy the inside of