Heimdall vs Heimdal

Heimdall and Heimdal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Heimdall	Yes	No	No	No
Heimdal	Yes	No	No	No

As nouns, Heimdall and Heimdal are synonyms defined as:

Heimdall and Heimdal: (Norse mythology) god of dawn and light; guardian of Asgard

Other synonyms of Heimdall include Heimdallr.

Heimdall (noun)	Heimdal (noun)
(Norse mythology) god of dawn and light; guardian of Asgard	(Norse mythology) god of dawn and light; guardian of Asgard