What does "refinish hardwood floors" mean?

[Curt Bixel]

I am curious if a scope of work that contains "refinish hardwood floor"  is ambiguous and thus open for a variety of interpretations.

My understanding going in was that the phrase "refinish hardwood floor" involves sanding the hardwood floor flat, probably using a drum sander, often, but not always staining the floor, and then finishing it with multiple coats of polyurethane. Am I correct?