In music, a rest (Whole Rest, Half Rest, Quarter Rest…) is a brief silence, a short break in the flow of sound. In musical notation, a rest is the sign that indicates such a break.
Just as there are music note of different values (whole note, half note, etc.), there are rests of different value. For each value of note, there is a rest of equivalent value; for each value of rest, there is a note of equivalent value.
Music Rests of Different Values
The example below shows how some of the music notes making up a musical phrase can be replaced with music rests of equivalent lengths.

Now, the same musical phrase, but some music notes have been changed in rests:

Note Value and Silence of an Equivalent Duration
There is a musical silence for each value of note

Difference Between American English and British English
AMERICAN ENGLISH – BRITISH ENGLISH
- Whole Rest – Semibreve Rest
- Half Rest – Minim Rest
- Quarter Rest – Crotchet Rest
- Quaver Rest – Quaver Rest
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All the Musical Silences
Note and rest values are not limited to those shown above. There are also a sixteenth note and a sixteenth rest (Semiquaver rest), a thirty-second note and a thirty-second rest (Demisemiquaver rest), a sixty-fourth note and a sixty-fourth rest (Hemidemisemiquaver rest).
Dotted Rest
The duration of a rest may be increased by half but it’s reserved to modern music.
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Music Rests and Music Theory
Music Staff (or Stave)
The music staff (or stave) is made by five parallel horizontal lines.
Clefs – Treble, Bass, Alto, Tenor
Learn about the different musical clefs and which one is used for each musical instrument.
Music Notes – Name of Notes (A B C or Do Re Mi)
Seven notes of music and two systems to name them.