rho / roe / row are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
rho: (noun) the 17th letter of the Greek alphabet.
roe: (noun) fish eggs or egg-filled ovary; having a grainy texture. (noun) eggs of female fish. (noun) the egg mass or spawn of certain crustaceans such as the lobster. (noun) the eggs or egg-laden ovary of a fish.
row: (noun) an arrangement of objects or people side by side in a line. (noun) a long continuous strip (usually running horizontally). (noun) a linear array of numbers, letters, or symbols side by side. (noun) a continuous chronological succession without an interruption. (verb) propel with oars.
rho: r·OW
roe: r·OW
row: r·OW
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)