reference system vs frame of reference

reference system and frame of reference both are nouns.

Word	Noun	Adjective	Verb	Adverb
reference system	Yes	No	No	No
frame of reference	Yes	No	No	No

As nouns, reference system and frame of reference are synonyms defined as:

reference system and frame of reference: a system that uses coordinates to establish position

Other synonyms of reference system include coordinate system, reference frame.

reference system (noun)	frame of reference (noun)
a system that uses coordinates to establish position	a system that uses coordinates to establish position
	a system of assumptions and standards that sanction behavior and give it meaning