systema alimentarium vs gastrointestinal system

systema alimentarium and gastrointestinal system both are nouns.

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

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

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

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

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