What distinguishes exploratory testing from adhoc testing?

Adhoc testing

Adhoc testing is a non-formal process of testing software without any planning, requirements, specifications, or documentation. Its fundamental purpose is to attain perfection in testing. Most entry-level professionals can conduct adhoc testing — you don’t need an experienced testing engineer.

Exploratory testing

Exploratory testing requires documentation and proper planning. It entails simultaneous learning, test design, and test execution. A methodical strategy, exploratory testing’s primary goal is to become familiar with the application. Similar to adhoc testing, exploratory testing does not require an experienced testing engineer.