Short Answer 
The answer explains the differences between an oligarchy, which is controlled by a small elite group, and a dictatorship, led by a single individual or tight-knit group that uses intimidation. It also provides real-world examples, highlighting how oligarchs in Russia influence power versus the overt control seen in North Korea.
Step 1: Understand the Structure of Power
An oligarchy is characterized by a small, elite group who retains control over a society, often due to their superior economic or military strength. In contrast, a dictatorship is fundamentally different as it is typically dominated by a single individual or a tight-knit group that exercises absolute authority. Recognizing this distinction is crucial to understanding how each system operates.
Step 2: Identify the Characteristics of Governance
While both systems exhibit concentrated power, there are notable differences in governance. In an oligarchy, decisions may be influenced by a few powerful individuals or families, without the need for direct intimidation. In a dictatorship, the ruling entity often employs brutality and intimidation to maintain order and suppress dissent, highlighting a more direct method of maintaining control.
Step 3: Examine Real-World Examples
An effective way to illustrate these differences is through examples. For instance, in modern-day Russia, oligarchs exert substantial influence over wealth and natural resources, manifesting traits of an oligarchy. Conversely, dictatorships like North Korea clearly demonstrate the more overt tactics of control a singular leader employs, with minimal tolerance for opposition.