Tone

The word tone is used in several different fields with different meanings.

Music

Note (Tone) - the abstract concept of note refers both to a unit of fixed pitch which has been given a name, and also to the graphic representation of that pitch in a notation system, and sometimes its duration.
Pitch (music) - the perceived frequency of a note or sound. See also pure tone.
Interval (music) - A whole tone is the difference in pitch between notes two semitones apart, also referred to as major second, the ratio 9:8 (just intonation), or in atonal or set theory an interval of 2. A semitone is half a whole tone or a minor second, the ratio 16:15, or the interval 1.
Timbre - Tone is also used as the quality of sound or timbre of an musical instrument.

Setting tone Authors set a tone in literature by conveying an emotion or emotions through words.
Tone (linguistics) refers to discrete pitches or pitch contours used by certain languages to distinguish words from each other.
In physiology, tone refers to the firmness or strength of a tissue or organ. See muscle tone and toning up , also topics in physical fitness.
River Tone - a river in England.
A river in the Kanto region of Japan.
Tone, a World War II cruiser of the Imperial Japanese Navy named after the river.