Writing Power is proud to present the following compendium of tips on proper usage. This is a list of some of the most commonly misused words and phrases in the English language. In order to compile it, I consulted some of my favorite writing handbooks: Diana Hacker’s A Writer’s Reference, John Trimble’s Writing with Style: Conversations on the Art of Writing, and Strunk and White’s The Elements of Style.
back up, backup: The former is a verb; the latter isn’t. You should back up your computer files. If you get into a fight, I will back you up. Backup can be a noun or an adjective, as in I made a backup of my files. I used to be a backup singer for Dionne Warwick.
bad, badly: Confusion over these words is the flipside of the good/well controversy. In general, bad is an adjective while badly is an adverb. There are a few twists to this one, though, which I explained in detail in my Good Well Ugly post.
being as, being that: Both of these phrases are the kind of vague jargon-speak that has infected our culture. Neither is useful. Substitute “because,” or restructure the sentence.