What is the difference between relative humidity and dew point? (link)

Relative humidity is the amount of moisture in the air compared to what the air can “hold” at that temperature, Shaffer said. The problem is, “warmer air can hold more water vapor,” he said, so the relative humidity can give people a skewed sense of the sticky-factor. Dew point is a more concrete number, he said.

What's The Difference Between Dew Point And Humidity?