seidr vs seid

seidr and seid both are nouns.

Word	Noun	Adjective	Verb	Adverb
seidr	Yes	No	No	No
seid	Yes	No	No	No

As nouns, seidr and seid are synonyms defined as:

seidr and seid: an Old Norse term for a type of sorcery which was practiced in Norse society during the Late Scandinavian Iron Age.

Other synonyms of seidr include seidh, seidhr, seith, seithr.

seidr (noun)	seid (noun)
an Old Norse term for a type of sorcery which was practiced in Norse society during the Late Scandinavian Iron Age.	an Old Norse term for a type of sorcery which was practiced in Norse society during the Late Scandinavian Iron Age.