systema lymphaticum vs lymphatic system

systema lymphaticum and lymphatic system both are nouns.

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

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

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

systema lymphaticum (noun)	lymphatic system (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