different names for the same thing

My favourite word is autodefenestrate, just because OMG, there's a word for that?! And because it reminds me of an amusing childhood incident when my brother spent quite some time hurling himself out of my groud-floor bedroom window and then coming straight back in through the front door to do it all over again :-)

I'm rather fond of sesquipedalian, too. (Not of sesquipedality, of course, cos she's evil ;-) And I like paradoxical words, although my brain's currently refusing to provide a handy example.