systema alimentarium vs digestive system

systema alimentarium and digestive system both are nouns.

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

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

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

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

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