As a symbol nor
is the iso 3166-1 three-letter (alpha-3) code for norway.
As a verb yet is
(dialectal) to melt; found; cast, as metal.
As a noun yet is
(dialectal) a metal pan or boiler; yetling.
As an adverb yet is
(usually with negative) thus far; up to the present; up to some specified time.
As a conjunction yet is
nevertheless; however; but; despite that.