gastrointestinal system vs systema digestorium

gastrointestinal system and systema digestorium both are nouns.

Word	Noun	Adjective	Verb	Adverb
gastrointestinal system	Yes	No	No	No
systema digestorium	Yes	No	No	No

As nouns, gastrointestinal system and systema digestorium are synonyms defined as:

gastrointestinal system and systema digestorium: the system that makes food absorbable into the body

Other synonyms of gastrointestinal system include digestive system, systema alimentarium.

gastrointestinal system (noun)	systema digestorium (noun)
the system that makes food absorbable into the body	the system that makes food absorbable into the body