Answer: What are the proper uses for semiannual, biannual, and biennial?

[randi2204]

We’ve been asked, “What are the proper uses for semiannual, biannual, and biennial?”  These three words can cause confusion due to having the same or similar roots.  Let’s take a look at them, with some help from the characters in Buffy the Vampire Slayer.

( What’s the measure of a year? )