Apart from billing for billing, which would irritate any client, this more likely has to do with the pointless tedium of hourly billing than intent to defraud. After all, how many different ways are there to describe the repetitive acts that are the core of boring legal work like this? If every day you're, in fact, "reviewing and revising transaction documents," as I'd suppose there are an army of lawyers doing every day on a contract like this, what would be the point of wasting time trying to come up with original variations of what is repetitive work? Really, what else are you going to call it?