A "Green Card" is permanent resident card. By definition you can NOT live somewhere else. You can live in the USA and holiday elsewhere, but not the other way around.
If it's an American Green Card then no you can't. You must go through the appropriate channels to immigrate to Canada. If it's a Green Card of Canada (which is actually called a Permanent Residency Card in Canada) then yes you can live in Canada.
You should have a green card to be able to live in USA.
A green card is an identification card which gives you the permission to live and work in the United States permanently (with a few exceptions, for example, if you commit a crime).
You are supposed to stay for 90 days in the USA in order to get a green card.
No, only to live there
It is easier if you apply for a visa first and live in the US. Once you have been here for a while, then apply for the Green Card.
You should live in the USA for at least 90 days in order to get green card and it is important to live those days continuously.
i need to live and work there...
No, you would need to obtain a green card
As a green card holder staying in US you have the rights to live and work there. Apart from this you can also petition for your close relatives using Form I-130 for them to get green card. Above all after five years of being a green card holder if you are eligible you can apply for US citizenship.
Russell Peters The Green Card Tour - Live from The O2 Arena - 2011 TV is rated/received certificates of: Australia:MA15+ USA:TV-MA
If you have a green card you are not allowed to leave the United States for an extended period of time. If you live and work in another country you could loose your green card. The way around this problem is to become Nationalized.