A nobiliary particle is used in a surname or family name in many Western cultures to signal the nobility of a family. The particle used varies depending on the country, language and period of time. However, in some languages the nobiliary particle is the same as a regular prepositional particle that was used in the creation of many surnames. In some countries, it became customary to distinguish the nobiliary particle from the regular one by a different spelling, although in other countries these conventions did not arise, occasionally resulting in ambiguity. The nobiliary particle can often be omitted in everyday speech or certain contexts.