There are probably hundreds of thousands of fresh water lakes in Canada. One provence alone "Manitoba" bills itself as land of 100,000 lakes on it's licence plates.There are too many to name, as Canada has about a 1/4 of the world's fresh water and is the second largest country in the world.
As suggested by the name, the Great Lakes are all lakes - bodies of fresh water. Seas are bodies of salt water.
The Great Lakes (all fresh water) are Lakes Superior, Michigan, Huron, Erie, and Ontario. Lake Champlain is considered a sixth by the Americans.
Lakes can be salt water or fresh water. If you mean a specific lake you will have to resubmit your question with the name of the Lake you wish to know about.
That would be the Great Lakes
Great Lakes
That is the Great Lakes
Little Lake
Canada,
the lakes are great bear lake and great slave lake
Canada
Hudson Bay
The great Lakes