No offense, but I don't think one here can help you. It could be any of those things, except the front axle, which a rear-wheel drive car does not have. Could also be ball joints, driveshaft flex-joints, etc. It really cannot be diagnosed on the Internet.
You either need to get under the car and jack it up and check out the suspension and wiggle the tires. Or, if you can't do that, take it to a shop, like a tire/alignment shop.
wheel bearings control trust loads in and out movements. If you can wiggle your wheel side to side chances are your tie rod bushing is bad. Just replace the whole unit with a brand new one on both sides.
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