transmission vs vehicle

transmission

noun
  • The fact of being transmitted. 

  • An assembly of gears through which power is transmitted from the engine to the driveshaft in a motor car / automobile; a gearbox. 

  • Something that is transmitted, such as a message, picture, or a disease; the sending of such a thing. 

  • The passage of a nerve impulse across synapses. 

  • The passing of a communicable disease from an infected host individual or group to a conspecific individual or group. 

  • The right possessed by an heir or legatee of transmitting to his successor(s) any inheritance, legacy, right, or privilege, to which he is entitled, even if he should die without enjoying or exercising it. 

  • The act of transmitting, e.g. data or electric power. 

vehicle

noun
  • A conveyance; a device for carrying or transporting substances, objects or individuals. 

  • A liquid content (e.g. oil) which acts as a binding and drying agent in paint. 

  • An animal or (rarely) a plant on which a Hindu deity rides or sits 

  • An entity to achieve an end. 

  • A mode or method of spiritual practice; a yana. 

  • A medium for expression of talent or views. 

  • The main excipient (such as an oil or gel) that conveys the active ingredient of a drug. 

How often have the words transmission and vehicle occurred in a corpus of books? (source: Google Ngram Viewer )