Gravity

Resultant force on Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation.

Gravitation, universal force exercised by two bodies onto each other (In casual discussion, gravity and gravitation are often used interchangeably).

The state or condition of having weight; weight; heaviness.

Specific gravity.

The state or condition of being grave (graveness).