Quince años is widely used as another name for a quinceañera celebration.
The phrase literally means “fifteen years,” referring to the celebrant’s fifteenth year of life. In many Spanish-speaking communities, people use quince años for the event, while quinceañera can refer to the girl, the celebration, or both depending on local usage.
Other names include fiesta de quince años and fiesta de quince. These expressions are closely related, but families may favor one based on country, region, or community tradition. English-language usage often uses quinceañera as the umbrella term.
The phrase does not mean that the party lasts fifteen years or that the person is fifteen years old for fifteen separate years. It identifies the milestone itself, much like “sweet sixteen” identifies a particular birthday celebration in English-speaking contexts.