seith vs seidh

seith and seidh both are nouns.

Word	Noun	Adjective	Verb	Adverb
seith	Yes	No	No	No
seidh	Yes	No	No	No

As nouns, seith and seidh are synonyms defined as:

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

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

seith (noun)	seidh (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.