entrails vs insides

entrails and insides both are nouns.

Word	Noun	Adjective	Verb	Adverb
entrails	Yes	No	No	No
insides	Yes	No	No	No

As nouns, entrails and insides are synonyms defined as:

entrails and insides: internal organs collectively (especially those in the abdominal cavity)

Other synonyms of entrails include innards, viscera.

entrails (noun)	insides (noun)
internal organs collectively (especially those in the abdominal cavity)	internal organs collectively (especially those in the abdominal cavity)