The term 'ITS BUSINESS IS PICKING UP' can be solved by three different crossword solutions: TAXI (4 letters), BUS (3 letters) and CAB (3 letters). Taxis, buses and cabs are all forms of public transportation that are used to transport people from one place to another. Taxis are usually privately owned vehicles that are hired for a fee, while buses and cabs are usually owned and operated by a government or private company. All three forms of transportation have seen an increase in business due to the rise in demand for transportation services.