Right on target, Evan! When I first downloaded Cassandra, three months ago, I tried to make the analogy with BigTable, whose paper I'd already read, but the differences between Cassandra and BigTable made it quite hard to grasp some Cassandra concepts.
Imho, as Table was renamed to Keyspace then Column should be the next concept to be renamed as showed by numbers 4, 5, 6, and 7 of your list. I would suggest to rename Column to Attribute (with the corresponding AttributeFamily or AttributeSet). It's not the best name, but right off the bat is what I can suggest. Edward
