The first scale everyone encounters when learning music is the major scale (pictured above), which follows the interval pattern T-T-S-T-T-T-S, where S is a Semitone, and T is a Tone (two semitones).

Only the order of tones and semitones is different ... but only when ascending. In western music, modal music dates from before the use of scales and keys. Modes are similar to tonal scales.