What's a dropesheet!? π
It's true "bone row" is probably not mentioned very often in the docs. Both the dopesheet and graph have a row for each bone.
Writing docs is hard! Too many words, too few words. Especially hard is a sane order for introducing concepts. They often overlap or reference each other, so one needs to be first and then has to reference the other concept before it's been properly explained. Also we don't want to explain the same things in multiple places.