This is the 6093rd most frequent Japanese word.
エチュード
"エチュード" (etchyūdo) means "etude," a short musical composition designed to practice a specific skill or technique.
Here, 'エチュード' refers to a musical piece designed for practicing and developing specific technical skills on an instrument.
彼女はピアノのエチュードを練習しています。
She is practicing piano etudes.
In this context, 'エチュード' is used metaphorically to mean improvisational exercises or practices for actors to develop their skills.
その映画の監督は俳優たちに即興エチュードを要求しました。
The director of the movie asked the actors to perform impromptu etudes.
Here, 'エチュード' is referring to preliminary sketches or studies in the field of visual arts.