Final answer:
The term 'secular' refers to the concern with obtaining wealth and power, especially as it pertains to rulers and authorities who are not directly associated with religious or spiritual matters.
Step-by-step explanation:
The term that refers to being concerned with obtaining wealth and power is secular. This term describes attitudes, activities, or other things that have no religious or spiritual basis. In the historical context, secular rulers, such as kings and princes, often competed with the church for control and authority over lands and people, being concerned with amassing wealth and power. This differed from religious authorities, who were concerned with matters of faith and church governance. However, secular rulers and the church could become deeply intertwined, as wealth and power were essential elements in sustaining the feudal system, and the church itself was a significant landowner.