gravity

Which Means:

The state of having weight, heaviness, pulling downward toward the ground.

Gravity keeps us from floating off into the sky.

This word can also mean "seriousness," as the room was filled with gravity after they heard the sad news.

Anything that is true, not fake or dreamed up.

Video games can help you understand the difference between fantasy and reality.

The suffix -ITY means state or condition. Do you know any other words that end in -ity?