Reasons for inaccuracy

Mouth resonating organs are no physical organs as part of the human body, that’s no matter for doubt. However, the term jaw harp for a diverse assortment of mouth resonating organs played in deviating manners gives reasons for inaccuracy.

heteroglotte-mondharp Houten mondharpen Mondharpen_c[1]

In comparison: why do we differentiate in the names of stringed instruments like ukelele, lute, banjo, mandoline, bouzouki, saz, guitar, etc.?