History. 1  Map of Canary Wharf area in 1899 showing West India Docks and the Isle of Dogs. 2  Canary Wharf aerial view (2009), from the southeast end of the Isle of Dogs, showing the Millwall Dock. 3  Canary Wharf, view east from Cabot Square. 4  London City Airport runway with Canary Wharf and the O2 Arena in the background.
By Investopedia AAA |. A: The main difference between a Roth 401(k) plan and Roth individual retirement account (IRA) is that the 401(k) is offered by an employer as a defined contribution pension, while the IRA is sought out by the individual.y Investopedia AAA |. A: The main difference between a Roth 401(k) plan and Roth individual retirement account (IRA) is that the 401(k) is offered by an employer as a defined contribution pension, while the IRA is sought out by the individual.
What is an IRA? There are two main types of IRAs (Individual Retirement Accounts): the Traditional IRA and the Roth IRA. Traditional IRA. A traditional IRA is very similar to a 401k. With a Traditional IRA, you can contribute up to $5,000 a year ($6,000 if age is 60 or older) as long as your salary is below a certain amount (see table below). The money is contributed tax free just like a 401k (subject to limitations).