lymphatic system vs systema lymphaticum

lymphatic system and systema lymphaticum both are nouns.

Word	Noun	Adjective	Verb	Adverb
lymphatic system	Yes	No	No	No
systema lymphaticum	Yes	No	No	No

As nouns, lymphatic system and systema lymphaticum are synonyms defined as:

lymphatic system and systema lymphaticum: the interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body

lymphatic system (noun)	systema lymphaticum (noun)
the interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body	the interconnected system of spaces and vessels between body tissues and organs by which lymph circulates throughout the body