When it comes to large vehicles used for transportation, "HGV" (Heavy Goods Vehicle) is a commonly used term in the UK. However, there are a few synonyms that can be used to describe these vehicles. One option is "semi-truck", which is commonly used in North America. Another synonym is "big rig", which is a slang term for a large tractor-trailer truck. In Australia and New Zealand, the term "road train" is used to describe a truck pulling several trailers. "Commercial truck" is another term that can be used interchangeably with HGV. No matter what name you use, these large vehicles play an important role in transporting goods across the country.