When more than one note is playing, it probably is a chord. But can the melody section have two or more notes, being played simultaneously?

EDIT: I mean for a single instrument whose focus is either melody or chords, could the melody part have simultaneous notes at any point?

When more than one note is playing, it probably is a chord. But can the melody section have two or more notes, being played simultaneously?

EDIT: I mean for a single instrument whose focus is either melody or chords, could the melody part have simultaneous notes at any point? (Eg right-hand piano notes).

When more than one note is playing, it probably is a chord. But can the melody section have two or more notes, being played simultaneously?

When more than one note is playing, it probably is a chord. But can the melody section have two or more notes, being played simultaneously?

EDIT: I mean for a single instrument whose focus is either melody or chords, could the melody part have simultaneous notes at any point?