ventriculus vs gizzard

ventriculus and gizzard both are nouns.

Word	Noun	Adjective	Verb	Adverb
ventriculus	Yes	No	No	No
gizzard	Yes	No	No	No

As nouns, ventriculus and gizzard are synonyms defined as:

ventriculus and gizzard: thick-walled muscular pouch below the crop in many birds and reptiles for grinding food

Other synonyms of ventriculus include gastric mill.

ventriculus (noun)	gizzard (noun)
thick-walled muscular pouch below the crop in many birds and reptiles for grinding food	thick-walled muscular pouch below the crop in many birds and reptiles for grinding food