Understand that 'caliph' signifies historical Islamic leaders, not contemporary figures.

Historical Significance

Use 'caliph' with respect as it refers to revered religious and political figures in Islam.

Cultural Respect

'Caliph' means successor, but not all successors of Muhammad are called caliphs.

Successor Misconception

 but that's not the case because the caliph that built that library, his name was al-Ma'mun -- he was Harun al-Rashid's son. He had told his advisers, "Get me all the scholars to translate any book they can get their hands onto into Arabic, and I will pay them its weight in gold." After a while, his advisers complained. They said, "Your Highness, the scholars are cheating.

Naif Al-Mutawa:...

 leading to artistic and scientific advancement. The caliph was wealthy and powerful beyond imagination. But there was never a clear line of succession dictating who would become the next caliph. Any male relative of the former caliph was eligible,

The rise and fall of the...

 now you'd be able to tell by the interactions with each other just how high-ranking they are and now Koki sort of overthrew the previous matriarch which was I think madam and pretty which caliph whose cub is around you above