hub vs marketplace

hub

noun
  • A point where many routes meet and traffic is distributed, dispensed, or diverted. 

  • A rough protuberance or projecting obstruction. 

  • A goal or mark at which quoits, etc., are thrown. 

  • A computer networking device connecting several Ethernet ports. See switch. 

  • The central part, usually cylindrical, of a wheel; the nave. 

  • A central facility providing a range of related services, such as a medical hub or an educational hub. 

  • A stake with a nail in it, used to mark a temporary point. 

  • A hardened, engraved steel punch for impressing a device upon a die, used in coining, etc. 

  • A screw hob. 

  • A block for scotching a wheel. 

  • An area in a video game from which individual levels are accessed. 

  • A male weasel; a buck; a dog; a jack. 

marketplace

noun
  • A place or sphere for the exchange of anything, such as ideas or fashions. 

  • The world of commerce and trade. 

  • The space, actual or metaphorical, in which a market operates. 

  • An open area in a town housing a public market. 

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