Blues harp and Mouth bow

Mouth bow and blues harp are semantically related. In some cases you can use "Mouth bow" instead a noun phrase "Blues harp".

Mouth bow noun - A small lyre-shaped musical instrument that is placed between the teeth and played by twanging a wire tongue while changing the shape of the mouth cavity.

Blues harp and mouth bow are semantically related. You can use "Blues harp" instead a noun phrase "Mouth bow".