There's a difference, you know. First, the wardrobe differs drastically. Gardeners wear floppy straw hats, sturdy pants with big pockets and loops for hanging tools, and clogs. Yardeners work in the yard wearing a hat from Disney World, cut-off blue jeans, and the tennis shoes they bought the year they graduated from high school. Then there are the tools themselves.
Gardeners have tools with matching handles.
Each tool has a special function and a special spot in the wooden gardener's bench at the end of the day. Yardeners are more likely to be out digging with an old serving spoon from the kitchen. They just toss it in the kids' sandbox once they have the petunias in the ground. Gardeners have a master calendar for all their gardening tasks, such as dividing seedlings, rotating rose bushes, whatever it is Martha Stewart finds to fill up her calendar even in the dead of winter. They wouldn't dream of pulling weeds unless it was on the schedule.