1) Title in Iran 
Ostād (Persian, Hindustani: {Nastaliq|استاد}; /ostɑːd/, master or teacher), is a Persian word, is an honorific title for a man in South Asia. The title precedes the name and is usually used for well-regarded teachers and artists, most often musicians. It is applied and used via informal social agreement. It is abbreviated as ut. or ud. Asi...