Tone

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

Alternate meanings

Note (Tone) - In music, 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.
River Tone - a river in England
Japanese cruiser Tone - a warship.

Commonly used in discussing

phonology - voice
Dual-tone multi-frequency or tone dialing (as opposed to pulse dialing)

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