At least here in the U.S., a brush cutter is more substantial than what you call a "strimmer" and we call weedeater or string trimmer (somehow I like your term better). The engine,while still a smaller 2 cycle is more powerful and has metal cutting blades. Since the blades are dangerous it usually has a blade guard. The ones we use here on the ranch are capable of cutting saplings up to an inch or so in diameter. They have two hand grips and a shoulder strap to support the weight. I imagine there are smaller ones however...