Thanks to the senders of these plural nouns that have no singular forms: cattle (Stephen Chase, Amarillo, Texas) and oodles (Lisa Holmes, Lafayette, Calif.). We’re not sure about “luggage” (submitted by Dave Savage of Livermore, Calif.) and the synonymous “baggage.” A person’s baggage or luggage might be a single bag, we think, so those don’t count.

One big veggie family: Broccoli, cauliflower, cabbage, kale, collard greens, kohlrabi and Brussels sprouts are all the same species of plant, brassica oleracea, also known as wild cabbage.

How many days of the week are named for Roman gods?

A) None

B) 1

C) 2

D) 3

Monday’s answer: The correct term for a native of St. Louis, Missouri, is St. Louisan.