Since whatwg/html#6315, the HTML spec suggests other specifications use "navigable" and associated concepts (along with Document) rather than "browsing context" in most cases. See also the notice in https://html.spec.whatwg.org/multipage/document-sequences.html#windows:

Modern specifications should avoid using the browsing context concept in most cases, unless they are dealing with the subtleties of browsing context group switches and agent cluster allocation. Instead, the Document and navigable concepts are usually more appropriate.

This specification references "browsing context" in https://w3c.github.io/screen-wake-lock/#the-request-method