frame of reference vs reference frame

frame of reference and reference frame both are nouns.

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

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

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

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

frame of reference (noun)	reference frame (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