knit stitch vs plain stitch

knit stitch and plain stitch both are nouns.

Word	Noun	Adjective	Verb	Adverb
knit stitch	Yes	No	No	No
plain stitch	Yes	No	No	No

As nouns, knit stitch and plain stitch are synonyms defined as:

knit stitch and plain stitch: a basic knitting stitch made by putting the needle through the front of the stitch from the lefthand side

Other synonyms of knit stitch include knit, plain.

knit stitch (noun)	plain stitch (noun)
a basic knitting stitch made by putting the needle through the front of the stitch from the lefthand side	a basic knitting stitch made by putting the needle through the front of the stitch from the lefthand side