treble clef vs treble staff

treble clef and treble staff both are nouns.

Word	Noun	Adjective	Verb	Adverb
treble clef	Yes	No	No	No
treble staff	Yes	No	No	No

As nouns, treble clef and treble staff are synonyms defined as:

treble clef and treble staff: a clef that puts the G above middle C on the second line of a staff

Other synonyms of treble clef include G clef.

treble clef (noun)	treble staff (noun)
a clef that puts the G above middle C on the second line of a staff	a clef that puts the G above middle C on the second line of a staff