As I've written in the past, I'm not a big fan of buzzwords because "they're vague, overbroad, ill-defined, and most of all trivialize what is really going on in the first place."
Matt at 37Signals says there might be other reasons to avoid buzzwords.
These buzzwords are often a mask. People who use them are covering up their ideas — or the lack thereof. They are overcompensating. They don’t have anything substantial to say so they try to use impressive sounding words instead.
But people who abuse buzzwords don’t sound smart. They sound like they are trying to sound smart. Big difference.
It's easy to use buzzwords and important-sounding words to gloss over your point when you don't really understand what you're talking about.
It's a lot harder to be clear and concise. Aim for the latter.
(Speaking of which, I'd recommend Plain Language for Lawyers, even if you're not a lawyer or law student).