reticulum vs second stomach

reticulum and second stomach both are nouns.

Word	Noun	Adjective	Verb	Adverb
reticulum	Yes	No	No	No
second stomach	Yes	No	No	No

As nouns, reticulum and second stomach are synonyms defined as:

reticulum and second stomach: the second compartment of the stomach of a ruminant

reticulum (noun)	second stomach (noun)
the second compartment of the stomach of a ruminant	the second compartment of the stomach of a ruminant
any fine network (especially one in the body composed of cells or blood vessels)