Hela vs Hel

Hela and Hel both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hela	Yes	No	No	No
Hel	Yes	No	No	No

As nouns, Hela and Hel are synonyms defined as:

Hela and Hel: (Norse mythology) goddess of the dead and queen of the underworld

Hela (noun)	Hel (noun)
(Norse mythology) goddess of the dead and queen of the underworld	(Norse mythology) goddess of the dead and queen of the underworld