Connected to an object. Every language's documentation could use a distinct expression constantly, but most true programmers use them interchangeably. (Nevertheless, this also indicates a lot of the terms may be ambiguous, like "class variable" - that may be interpreted as "a variable of an instance of the given course", https://maxestatesgurgaon.car.blog/2025/05/12/smart-world-the-edition-sector-66-gurgaon-a-new-era-of-luxury-urban-living/