nascar
Synonym discussion
Sense: noun/1
NASCAR, stock-car racing, Formula One, and IndyCar all belong to motor racing, but they do not mean the same thing. NASCAR is the name of the US organization and the racing world built around it. Stock-car racing is the broader sport of racing modified road cars, so NASCAR is one important part of that sport rather than the whole category. Formula One and IndyCar use open-wheel cars, not stock cars, and they run under different rule systems. A learner might watch NASCAR on Sunday, read about stock-car racing in general, or compare a NASCAR driver with a Formula One champion.
Common collocations
Etymology
NASCAR comes from the first letters of the organization's full English name. Over time, the short form became the usual label for the US body that oversees stock-car racing and for the racing world connected with it.