Ullr vs Ull

Ullr and Ull both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ullr	Yes	No	No	No
Ull	Yes	No	No	No

As nouns, Ullr and Ull are synonyms defined as:

Ullr and Ull: (Norse mythology) one of the Aesir known for his beauty and skill with bow and skis; son of Sif and stepson of Thor

Ullr (noun)	Ull (noun)
(Norse mythology) one of the Aesir known for his beauty and skill with bow and skis; son of Sif and stepson of Thor	(Norse mythology) one of the Aesir known for his beauty and skill with bow and skis; son of Sif and stepson of Thor