vermiform appendix vs blind gut

vermiform appendix and blind gut both are nouns.

Word	Noun	Adjective	Verb	Adverb
vermiform appendix	Yes	No	No	No
blind gut	Yes	No	No	No

vermiform appendix (noun)	blind gut (noun)
a vestigial process that extends from the lower end of the cecum and that resembles a small pouch	the cavity in which the large intestine begins and into which the ileum opens