The most common global synonyms for taxi are cab and taxicab, terms derived from the original "taximeter cabriolet." In British English, particularly London, the term hackney or hackney carriage is still used for the iconic black cabs. In US slang, you might hear the term hack or jitney (often used for small, informal buses). For unofficial or private hire vehicles, the term gypsy cab or minicab is common in the UK. In the age of ride-sharing, "Uber" and "Lyft" are often used as verbs for the service itself. Regionally, you might encounter words like rickshaw or tuk-tuk for small motorized taxis in Asia, or collectivo for shared taxis in Latin America. Interestingly, in aviation, "taxi" is used as a verb to describe the slow movement of an aircraft on the runway before takeoff or after landing.