signature vs musical notation

signature and musical notation both are nouns.

Word	Noun	Adjective	Verb	Adverb
signature	Yes	No	No	No
musical notation	Yes	No	No	No

As nouns, musical notation is a hypernym of signature; that is, musical notation is a word with a broader meaning than signature:

signature (noun)	musical notation (noun)
a distinguishing style	(music) notation used by musicians
your name written in your own handwriting
a sheet with several pages printed on it; it folds to page size and is bound with other signatures to form a book
the sharps or flats that follow the clef and indicate the key
a melody used to identify a performer or a dance band or radio/tv program