I was baffled to see a large front lawn surrounded by flowering shrubs described as a 'front yard' in an American magazine article. This space was larger than most British gardens. We Brits would call it a garden, so why was it being described as a 'yard'? I've also seen lawned or rough areas around and at the back of the house described by Americans as 'yards'.
Yards, to my mind, are generally paved, utilitarian areas. They may be small, like the yards at the back of Victorian terraced houses, space for a washing line, perhaps with a privy shed and a coal shed, or just access to the privy and coal hole, a few strides between the back door and the gate to the back lane. Or larger, like a farmyard, livery yard, scrapyard or builders' yard.
Intrigued, I asked an American friend to explain their use of yard and garden. It seems a 'yard', in addition to a paved, utilitarian space, is an outside space attached to a property, which isn't being deliberately designed and used as a growing space. Okay, there might be a stretch of lawn surrounded by shrubs, but it's whatever, nothing special. The grass gets cut and the shrubs pruned and mulched, the leaves raked up, but there's no thought of design, no intent beyond a tidy bit of kerb-appeal. It may be a space to play catch, have barbecues, sit in the sun, but it isn't being actively 'gardened'. To count as a garden, the same space would have design and intent behind it, from which plants to grow and how they work together, to landscaping of paths and levels, or a space designed for growing fruit and vegetables. If you happen to have a few citrus and olive trees in your Californian 'garden', it may nevertheless be a 'yard'.
So many people here in the UK, especially in houses built from the 1960s on, have a small, private, outside space - a 'garden'. Often described in estate agents' details as an 'easily-maintained garden', which they think is a positive, but is not attractive to someone who really wants to garden. There is an almost cultural imperative to have a lawn, which one feeds and seeds to make it grow, then cuts to keep the growth down, keeping it free of 'weeds' by using a broad leaf herbicide, keeping any shrubs around it free of pests by using a pesticide. Controlling the space is what makes it a 'garden' here in the UK. So if it's an outside patch with a patio, a shed and a patchy stretch of grass with a trampoline and swing, it's a garden in the UK, but a yard in the USA.
I can see the point here; this differentiation of yard and garden makes sense and is growing on me (sorry, couldn't resist the pun!). I would not often (if ever?) say this, but this is an example of American English usage that I would like to see introduced here in the UK.