They didn't seem to understand the 'gravity' [='seriousness'] of the situation.
He uttered the oath with proper 'gravity'. [='solemnity']
Its low 'center of gravity' makes the car very stable.
(..) I feel everything. Space, the air, the vibrations, the people. I can feel the gravity. I can feel the rotation of the Earth. The heat leaving my body, the blood in my veins, I can feel my brain. The deepest parts of my memory. (..)2014 Lucy