playful, often noisy, activity.
amusement, enjoyment or pleasure
Enjoyable or amusing.
Whimsical or flamboyant.
To tease, kid, poke fun at, make fun of.
The lowness of a note.
The state or condition of being grave; seriousness.
Specific gravity.
The state or condition of having weight; weight; heaviness.
Gravitation, the universal force exercised by two bodies onto each other.
The force at the Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation, resulting from gravitation.