Aero, Chordo, Membrano, Electro, and Idiophone are different categories of musical instruments.
Aero instruments are musical instruments that produce sound by using air to vibrate within the instrument. Examples include flutes, trumpets, and bagpipes.
Chordo instruments are musical instruments that produce sound by using vibrating strings. Examples include guitars, violins, and pianos.
Membrano instruments are musical instruments that produce sound by using a stretched membrane, such as a drumhead, to vibrate and create sound. Examples include drums and tambourines.
Electro instruments are electronic musical instruments that use electricity to produce sound. Examples include synthesizers, electronic keyboards, and drum machines.
Idiophone instruments are musical instruments that produce sound through the vibration of the entire instrument itself. Examples include xylophones, maracas, and cymbals.