Clavier and Mouth bow

Clavier noun - A stringed instrument that has a keyboard.

Mouth bow and clavier are semantically related. In some cases you can use "Mouth bow" instead a noun "Clavier".

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.

Clavier and mouth bow are semantically related. Sometimes you can use "Clavier" instead a noun phrase "Mouth bow".