systema digestorium vs gastrointestinal system

systema digestorium and gastrointestinal system both are nouns.

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

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

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

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

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