Flute, piccolo, bass flute, nose flute, etc.
In a stringed musical instrument, the part that vibrates in resonance with the sound waves produced by the strings is called the soundboard or the resonating body. This part amplifies and projects the sound created by the vibrating strings to produce audible music.
resonator
First the strings then the rest of it amplifies it.
The eardrum
We just learned about this in science class. Air vibrates throughout the tube part and out the bell to produce sound waves.
Musical instruments have some part that vibrates at a regular frequency. This vibrating part makes the air around it vibrate and these vibrations make the sound waves. The part that vibrates is often a string or a reed or a drum-head or in the case of horns, the player's lips. The vibrations are amplified by a column of air or a sounding board or something else that resonates at the frequency produced by the original vibration.
The middle ear, consisting of the three tiny bones called the ossicles (malleus, incus, stapes), amplifies vibrations from incoming sound waves before transmitting them to the inner ear.
The reed of the shehnai, which is placed inside the mouthpiece, is the part that vibrates when air is blown into the instrument. The vibration of the reed creates the sound that is characteristic of the shehnai.
The strings are the source for vibrations but the whole instrument vibrates to some extent when they are sounded.
musical instruments differ in the part of the instrument that vibrates and in the way that the vibrations are made
This is a matter of discussion. Your lips are used to set up a sinusoidal pressure wave in the trumpet, but nothing in the trumpet tubing vibrates to produce the sound. Modern testing shows that the pressure forms into "standing waves" which produce the sound when they hit the bell area where the standing waves are amplified to reproduce the pressure waves again.