Hyphens, En Dashes, Em Dashes

Q. There has been an increase in the use of green to mean “ecofriendly.” Should we place green in quotation marks when used in this manner? Does it depend on the sentence?

A. Usually the context makes the meaning clear without quotation marks, but if you think there is a possibility of confusion, use them the first time the word appears. If you’ve already used words like ecofriendly, there’s probably no need.