hello.
from wikipedia:
Caviar, according to the Food and Agriculture Organization, is a product made from salt-cured fish-eggs of the Acipenseridae family. The roe can be “fresh” (non-pasteurized) or pasteurized, with pasteurization reducing its culinary and economic value.[1]
Traditionally the term caviar refers only to roe from wild sturgeon in the Caspian and Black Seas[2] (Beluga, Ossetra and Sevruga caviars). Depending on the country, caviar may also be used to describe the roe of other fish such as salmon, steelhead, trout, lumpfish, whitefish,[3] and other species of sturgeon.[4][5]
so it seems this is another word that has a very specific meaning and a more general meaning. however it doesnt seem to be just a synonym for ‘row’.
goodbye.