row vs run-in

row and run-in both are nouns.

Word	Noun	Adjective	Verb	Adverb
row	Yes	No	Yes	No
run-in	Yes	No	No	No

As nouns, row and run-in are synonyms defined as:

Other synonyms of row include dustup, quarrel, words, wrangle.

row (noun)	run-in (noun)
the act of rowing as a sport	an angry dispute
(construction) a layer of masonry
a continuous chronological succession without an interruption
an arrangement of objects or people side by side in a line
a linear array of numbers, letters, or symbols side by side
a long continuous strip (usually running horizontally)
an angry dispute

row (verb)	run-in (verb)
propel with oars