Polygonia comma form of comma is frequently confused with the dark form of the question mark ("P. interrogationis"), but the two can readily be distinguished by the shape of the comma mark on the underside. The pale form is easily confused with the satyr comma ("P. satyrus"), which usually occurs north and west of the eastern comma's range. They can be distinguished by the upperside color, which is orange brown in the comma and tawny yellowish brown in "P. satyrus"; by the underside pattern, which tends to be mottled in the comma but appears to be more longitudinally streaked in "P. satyrus";
Comma the comma is used to denote Logical Conjunction ("and"). The comma-separated values (CSV) format is very commonly used in exchanging text data between database and spreadsheet formats. The comma is used as a diacritic mark in Romanian under the "s" ("Ș", "ș"), and under the "t" ("Ț", "ț"). A cedilla is occasionally used instead of it, but this is technically incorrect. The symbol "d̦" ("d" with comma below) was used as part of the Romanian transitional alphabet (19th century) to indicate the sounds denoted by the Latin letter "z" or letters "dz", where derived from a Cyrillic "ѕ" (). The