What is Selenium IDE and WebDriver?
Selenium IDE provides an alternative interface for those developers and testers who don’t have the coding skills or experience to use Selenium’s original programming interface.
WebDriver is not as convenient and is far less beginner-friendly. Its primary design centers around more complex tasks. You need solid code language knowledge, but luckily many code languages are compatible with WebDriver.
If you want to see the differences from a practical standpoint, then read the tutorial on these two tools.