breathe – This is a verb. It is an action; a thing you do. For example, when you breathe through your mouth like that, it makes you look like a dumbass.
breath – This is a noun. It is a thing you have, like that really stank coffee breath. Dude, do you need a mint?
psyche – Psyche is a figure in Greek mythology; the psyche refers to the ancient Greek conception of the self. That is all.
psych – This is the common abbreviation for psychiatric. Note that there is no "e." There is no "e" in psychology; there is no "e" in psychiatry or psychological or psychiatric. THERE IS NO "E." When you are mentally ill and have to check yourself into the psych ward, and when you blog about it later, quite famously, be sure to spell the effing word correctly.
faze – This is a verb, and it means something similar to "daunt." Yes, this is really how you spell it. Not that my exasperation fazes you.
phase – Not the same. Dude, stop saying you are "unphased." You?ll have to stop eventually. I mean, this is just a phase you?re going through, right? Right?
demure – This is an adjective; it describes things, such as your coyly decorous behavior, you little minx.
demur – This is a verb. It takes action! It objects to that suggestion!
bate – Hello friends, here we have another verb! What does it mean?. You are waiting with bated breath over there, aren?t you? Well relax, dude, because I am here to tell you that this word is another form of abate.
bait – Jail bait. Bait and switch. Bait the hook. Not the same as bate, above. Unless?.wait, are you able to bait your breath somehow? It?s the mint I gave you, isn?t it? Fess up.
rein – If this is a noun, it?s the leather strap you use to steer your horse, or the one your kinky boyfriend uses to?oh, never mind. If it?s a verb, it means hold back or keep in check. I see you?re excited over there, but please try to rein it in.
reign – A period of rule or sovereign power. You are entering the reign of reason; please wear your seat-belt at all times.
schwag – Dope. Pot. Mary Jane. Ganja. Weed. Bad weed, at that. The dry, seedy stuff. The brown frown. Don?t even think about bringing that schwag over to my house when I know you?re sitting on a bag of Northern Lights. Seriously, dude, that is just bad form.
swag – Loot. Booty. Free stuff, such as the fancy-schmancy free stuff they give actors just for showing up to awards shows and shit. Entertainment "journalists" of America, please stop saying that the Oscars gift bags are going to be full of great schwag this year. For one thing, great schwag is, by definition, an impossibility; for another thing, I don?t think you want to get Lindsay Lohan and Woody Harrelson all excited over something that is just going to turn out to be a free watch.