Automobile and automotive are words that are associated with the vehicle manufacturing sector. Both of these words are often used interchangeably to refer to any motor vehicle, although automotive is a broader umbrella term that denotes anything linked to motor vehicles. Automotive is (an adjective) used to describe anything that is related to motor vehicles. At the same time, the automobile is a (noun) word that typically denotes a four-wheeled car or motor vehicle that is used for transportation. So automobiles, which are typically passenger vehicles, are essentially a subset or part of the automotive industry.