layer vs row

layer and row both are nouns.

Word	Noun	Adjective	Verb	Adverb
layer	Yes	No	Yes	No
row	Yes	No	Yes	No

As nouns, row is a hyponym of layer; that is, row is a word with a more specific, narrower meaning than layer:

Other hyponyms of layer include backing, mount, blanket, course, cushion, interlayer, lift, overlay, ply, tier, wall.

layer (noun)	row (noun)
thin structure composed of a single thickness of cells	the act of rowing as a sport
a hen that lays eggs	(construction) a layer of masonry
single thickness of usually some homogeneous substance	a continuous chronological succession without an interruption
an abstract place usually conceived as having depth	an arrangement of objects or people side by side in a line
a relatively thin sheetlike expanse or region lying over or under another	a linear array of numbers, letters, or symbols side by side
	a long continuous strip (usually running horizontally)
	an angry dispute

layer (verb)	row (verb)
make or form a layer	propel with oars