manner vs signature

manner and signature both are nouns.

Word	Noun	Adjective	Verb	Adverb
manner	Yes	No	No	No
signature	Yes	No	No	No

As nouns, signature is a hyponym of manner; that is, signature is a word with a more specific, narrower meaning than manner:

manner (noun)	signature (noun)
a way of acting or behaving	a distinguishing style
how something is done or how it happens	your name written in your own handwriting
a kind	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