Pentatonic
A pentatonic scale is a scale with 5 tones per period. It is one of the most commonly used types of scale in the world.
Pentatonic MOS scales may be found at: Pentatonic MOS.
Other pentatonic scales may be found at: Category:5-tone scales.
Pentatonic scales may sometimes be used as chords rather than scales, in which case they are called pentads.
Equipentatonic scales are scales with 5 roughly equally spaced tones per octave, common in some musical traditions. The exactly equal form of the equipentatonic scale is 5edo.
5 equal frequency divisions instead of pitch gives the pentatonic overtone scale, the first mode of 5afdo.