Page "Harp" Paragraph 5

A number of non-harp-like instruments are colloquially referred to as " harps ".

Chordophones like the aeolian harp, ( wind harp ) and the autoharp ( with the piano and harpsichord ) are not harps, but zithers, because their strings are not perpendicular to their soundboard.

Similarly, the many varieties of harp guitar and harp lute, while chordophones, belong to the lute family and are not true harps.

All forms of the lyre and kithara are also not harps, but belong to the fourth family of ancient instruments under the chordophones, the lyres.