Dominant generally refers to the fifth degree of the scale. Dominant seventh is a seventh chord built off of the dominant.
Yes. In most western music in a major key the song normally ends dominant to tonic
G, b, d, f
Major Seventh Chords
All secondary dominants are merely diatonic chords with nondiatonic inflections. Secondary dominants in most instances proceed in the same manner as their diatonic counterparts. With few exceptions...