myth vs Ragnarok

myth and Ragnarok both are nouns.

Word	Noun	Adjective	Verb	Adverb
myth	Yes	No	No	No
Ragnarok	Yes	No	No	No

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

myth: a traditional story accepted as history; serves to explain the world view of a people
Ragnarok: myth about the ultimate destruction of the gods in a battle with evil

Other hyponyms of myth include Gotterdammerung, Twilight of the Gods.

myth (noun)	Ragnarok (noun)
a traditional story accepted as history; serves to explain the world view of a people	myth about the ultimate destruction of the gods in a battle with evil