The kameez can be described as a long shirt or tunic, which might have short, long or no sleeves. It comprises of chaak (side seams) below the waist-line and usually reaches the knees.
The salwar can be taken to mean loose, pajama-like trousers, with an in-built string, at the waist level, for tying purposes. The dupatta/chunni is like a stole, which is either hung on the shoulder or slung across the neck.