beurre noisette vs brown butter

beurre noisette and brown butter both are nouns.

Word	Noun	Adjective	Verb	Adverb
beurre noisette	Yes	No	No	No
brown butter	Yes	No	No	No

As nouns, beurre noisette and brown butter are synonyms defined as:

beurre noisette and brown butter: clarified butter browned slowly and seasoned with vinegar or lemon juice and capers

beurre noisette (noun)	brown butter (noun)
clarified butter browned slowly and seasoned with vinegar or lemon juice and capers	clarified butter browned slowly and seasoned with vinegar or lemon juice and capers