Meaning : The era of Islam's ascendancy from the death of Mohammed until the 13th century. Some Moslems still maintain that the Moslem world must always have a calif as head of the community.
Example :
Their goal was to reestablish the Caliphate.
Meaning : The territorial jurisdiction of a caliph.
Meaning : The office of a caliph.
Caliphate ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Caliphate ka matlab kya hota hai?