Garden or Yard?

My garden in Port Sunlight is fairly small. Some people wouldn't call it a garden. Perhaps a courtyard because of it's size and because it is completely walled. After all what is a garden. Definitions seem to suggest it's anything where plants are cultivated. Personally because I have a lawn (albeit a small, boggy, mostly weedy carpet), to me it makes it a garden, as opposed to a yard, but it splitting hairs ...
Previously I am convinced that it was just a yard, that somewhere over the last 120 years has been converted into a "garden". The sizes of the gardens in the village vary enormously, some people enjoying 70 ft plus gardens. I think Mr Lever who created the village intended there to be outdoor space of some sort for all, and there's certainly that....There's an outdoor toilet that acts now as our unorganised shed. The walls give a sense of privacy and lend a lot of shelter to my plants, but we don't get a lot of sun, only at the end and right hand side of the garden, which isn't assited by by the enormous shadow cast by our grade II towering house...