Popes are the head of the Catholic Church and chosen by the church. Kings are people who inherit the crown through family members.
the popes had more power over the kings
well everyone because popes had more authority than kings.
Kings are the ruler of that country. Popes are the head of the Roman Catholic Church.
the goverment
Kings and Popes... I believe. (:
The Vatican does not have kings, it has popes.
Nobles
Vagabonds are basically hobos. Kings are... royal.
Emperors and kings disagreed with the Popes over who should appoint bishops. The disagreement lead to the Investiture controversy.
I am assuming you are asking about disagreements between Church authorities, such as popes, and secular authorities, such as kings or emperors. The answer is yes, sometimes the kings and emperors won. Their victories were not permanent, but the victories sometimes lasted for the rest of their lives. There was a period from 1305 to 1378, for example, when the popes were so dominated by the Kings of France that they did not go to Rome and remained in what has been called the "Babylonian Captivity" of the popes.
The problems of the church and the fights between the Popes and Kings of assigning bishops. Also the crusades.
The name common to three Scottish kings, eight popes, and three tsars of Russia is Alexander.