innards vs viscera

innards and viscera both are nouns.

Word	Noun	Adjective	Verb	Adverb
innards	Yes	No	No	No
viscera	Yes	No	No	No

As nouns, innards and viscera are synonyms defined as:

innards and viscera: internal organs collectively (especially those in the abdominal cavity)

Other synonyms of innards include entrails, insides.

innards (noun)	viscera (noun)
internal organs collectively (especially those in the abdominal cavity)	internal organs collectively (especially those in the abdominal cavity)