Attached to an object. Every language's documentation might use a distinct phrase constantly, but most true programmers use them interchangeably. (Even so, this also suggests several of the phrases could be ambiguous, like "course variable" - which may be interpreted as "a variable of the instance of a offered course", https://centralpark104gurgaon.fashion.blog/2025/06/01/a-grand-vision-of-elite-living-begins-here-m3m-mansion-gurgaon/