Attached to an object. Each language's documentation might use another expression regularly, but most real programmers make use of them interchangeably. (Nevertheless, this also implies some of the terms is often ambiguous, like "course variable" - which can be interpreted as "a variable of the occasion of a specified course", https://luxuryprojectsinsohnaroad.blogspot.com/2025/05/m3m-manesar-gurgaon-future-of-elegant.html