Norse mythology vs mythology

Norse mythology and mythology both are nouns.

Word	Noun	Adjective	Verb	Adverb
Norse mythology	Yes	No	No	No
mythology	Yes	No	No	No

As nouns, mythology is a hypernym of Norse mythology; that is, mythology is a word with a broader meaning than Norse mythology:

Norse mythology: the mythology of Scandinavia (shared in part by Britain and Germany) until the establishment of Christianity
mythology: myths collectively; the body of stories associated with a culture or institution or person

Norse mythology (noun)	mythology (noun)
the mythology of Scandinavia (shared in part by Britain and Germany) until the establishment of Christianity	the study of myths
	myths collectively; the body of stories associated with a culture or institution or person