Introvert vs Extrovert vs Ambivert - Which One Are You?

What are the differences between introvert vs extrovert vs ambivert? Introverts and extroverts are extreme opposites in personality types. For the longest time though, you were considered either one or the other. But, to be either an introvert or extrovert, you have to have more of one type of trait than the other. However, there’s another personality type - ambivert. It falls somewhere in the middle of the two extremes.
So, how does an introvert vs extrovert vs ambivert differ from one another?