Piano is a great instrument.
piano is an acoustic, stringed musical instrument invented in Italy by Bartolomeo Cristofori in the 17th century
An acoustic piano usually has a protective wooden case surrounding the soundboard and metal strings,
We also have the digital piano is a type of electronic keyboard designed to serve primarily as an alternative to the traditional piano.
ost modern pianos have a row of 88 black and white keys, 52 white keys for the notes of the C major scale and 36 shorter black keys
Pedal keyboard
A pedalboard (also called a pedal keyboard, pedal clavier, or, with electronic instruments, a bass pedalboard) is a keyboard played with the feet that is usually used to produce the low-pitched bass line of a piece of music. A pedalboard has long, narrow lever-style keys laid out in the same semitone scalar pattern as a manual keyboard, with longer keys for C, D, E, F, G, A and B, and shorter, higher keys for C, D
Piano
The piano is an acoustic, stringed musical instrument invented in Italy by Bartolomeo Cristofori around the year 1700 (the exact year is uncertain), in which the strings are struck by hammers. It is played using a keyboard, which is a row of keys (small levers) that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings. 
The word piano is a shortened form of "pianoforte", the Italian term for the early 1700s versions