An octave is the interval between the first and eighth note of a diatonic scale. The term Octaves refers to the technique of playing two notes an octave apart at the same time. This Octave Soloing technique was popularized by both Wes Montgomery
and later by George Benson.
Below you will find the E Major Scale in Octaves played on the First (E) and Fourth (D) Strings. I finger the First (E) string with my index finger and the Fourth (D) string with my ring finger.