Noun

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.

* {{quote-magazine, date=2013-06-07, author=David Simpson

, volume=188, issue=26, page=36, magazine=(The Guardian Weekly) , title= Fantasy of navigation , passage=It is tempting to speculate about the incentives or compulsions that might explain why anyone would take to the skies in [the] basket [of a balloon]: perhaps out of a desire to escape the gravity of this world or to get a preview of the next; […].}}

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

* {{quote-magazine, date=2012-01, author=Michael Riordan, volume=100, issue=1, page=86

, magazine=(American Scientist) , title= Tackling Infinity , passage=Some of the most beautiful and thus appealing physical theories, including quantum electrodynamics and quantum gravity , have been dogged for decades by infinities that erupt when theorists try to prod their calculations into new domains. Getting rid of these nagging infinities has probably occupied far more effort than was spent in originating the theories.}}

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

Specific gravity.

The state or condition of being grave (graveness).

Noun

(-)

The state or characteristic of being staid.

* 1836 , , Sketches of Boz , ch. 7:

It is difficult to say whether Mr. John Dounce's red countenance, illuminated as it was by the flickering gas-light in the window before which he paused, excited the lady's risibility, or whether a natural exuberance of animal spirits proved too much for that staidness of demeanour which the forms of society rather dictatorially prescribe.

* 1887 , , Under the Storm , ch. 22:

[T]here was a staidness and sobriety about her demeanour that kept all impertinence at a distance.