stitch vs run up

stitch is a noun but run up is not a noun.

Word	Noun	Adjective	Verb	Adverb
stitch	Yes	No	Yes	No
run up	No	No	Yes	No

As verbs, stitch and run up are synonyms defined as:

Other synonyms of stitch include sew, sew together.

stitch (noun)	run up (noun)
a link or loop or knot made by an implement in knitting, crocheting, embroidery, or sewing
a sharp spasm of pain in the side resulting from running

stitch (verb)	run up (verb)
fasten by sewing; do needlework	pile up (debts or scores)
	raise by using ropes and pulleys
	fasten by sewing; do needlework
	make by sewing together quickly
	accumulate, sometimes as a debt