It gets kind of confusing, the terms get interchanged a lot.....most people who refer to their RSPs, (retirment savings plans) have registered them for the tax deduction thus making them RRSPs....but you can have an Retirement Savings Plan that has unregistered components.

For my own part I view the TFSA as a retirement account....and a better vehicle because I'll be able to withdraw all the money, both my initial investment and the growth...and I won't have to pay any tax on it while with an RRSP every dime I take out will be taxed at my marginal rate...