-abad is a suffix that forms part of many west, central and south Asian city names originally derived from the Persian language term (آباد), meaning "cultivated place" (village, city, region), and commonly attached to the name of the city's founder or patron.
The suffix -stan (ـستان|translit.
An administrative division, unit, entity, area or region, also referred to as a subnational entity, statoid, constituent unit, or country subdivision, is a portion of a country or other region delineated for the purpose of administration.
A bakhsh (بخش) is a type of administrative division of Iran.
The counties of Iran, called shahrestan (شهرستان), are administrative divisions of larger provinces (ostan).
Dehestan (دهستان) is a type of administrative divisions of Iran.
The Iranian calendars (گاهشماری ایرانی Gâhshomâriye Irâni) are a succession of calendars invented or used for over two millennia in Iran (Persia).
Iran is subdivided into thirty-one provinces (استان Ostān, plural استانها Ostānhā), each governed from a local center, usually the largest local city, which is called the capital (Persian: مرکز, markaz) of that province.