structural:scholar_edition
Terminology and etymology

The modern English word harp comes from the Old English hearpe; akin to Old High German harpha. A person who plays a pedal harp is called a "harpist"; a person who plays a folk-harp is called a "harper" or sometimes a "harpist"; either may be called a "harp-player", and the distinctions are not strict.

A number of instruments that are not harps are none-the-less colloquially referred to as "harps". Chordophones like the aeolian harp (wind harp), the autoharp, the psaltery, as well as the piano and harpsichord, are not harps, but zithers, because their strings are parallel to their soundboard. Harps' strings rise approximately perpendicularly from the 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, closely related to the zither family.

The term "harp" has also been applied to many instruments which are not even chordophones. The vibraphone was (and is still) sometimes referred to as the "vibraharp", though it has no strings and its sound is produced by striking metal bars. In blues music, the harmonica is often casually referred to as a "blues harp" or "harp", but it is a free reed wind instrument, not a stringed instrument, and is therefore not a true harp. The Jew's harp is neither Jewish nor a harp; it is a plucked idiophone and likewise not a stringed instrument. The laser harp is not a stringed instrument at all, but is a harp-shaped electronic instrument controller that has laser beams where harps have strings.