worsted vs worsted yarn

worsted and worsted yarn both are nouns.

Word	Noun	Adjective	Verb	Adverb
worsted	Yes	No	No	No
worsted yarn	Yes	No	No	No

As nouns, worsted and worsted yarn are synonyms defined as:

worsted and worsted yarn: a tightly twisted woolen yarn spun from long-staple wool

worsted (noun)	worsted yarn (noun)
a woolen fabric with a hard textured surface and no nap; woven of worsted yarns "he wore a worsted suit"	a tightly twisted woolen yarn spun from long-staple wool
a tightly twisted woolen yarn spun from long-staple wool