the.com/clavier

means A general term for a keyboard instrument—especially used historically to cover harpsichords, clavichords, and early pianos before the terminology settled.

from From French clavier, meaning 'keyboard,' itself rooted in Latin clavis, 'key.' German adopted it as Klavier, which simply means 'piano' today—but in the 18th century, when instrument makers and composers couldn't agree whether a keyboard work was meant for harpsichord, clavichord, or the newfangled pianoforte, 'clavier' became the handy, noncommittal word for 'whatever keyboard you've got.' Bach's 'Well-Tempered Clavier' is the famous case: a title that dodges the question on purpose.