The pair of words that always confuse for many people

There are some words and phrases which is always confusing to us (or at least for me 😊).

Here is some of the list. It may take a while to understand the difference between them.

You can comment below to add more similar words.

• centripetal force and centrifugal force
• cpu and core
• affect and effect
• principal and principle
• whether and weather
• potential and potential energy