"Single quote" is a commonly used term in writing and printing to refer to the punctuation mark used to enclose a quotation or emphasize a word or phrase. However, there are several other terms that can be used synonymously with "single quote." These include inverted comma, apostrophe, closed quote, and prime. In some regions, the term inverted comma is preferred over single quote, while apostrophe is used more often when referring to the punctuation mark that indicates possession or contractions. Despite the usage differences, these terms all refer to the same punctuation mark and can be used interchangeably.