entrance vs opening

entrance

noun
  • The beginning of a musician's playing or singing; entry. 

  • The act of taking possession, as of property, or of office. 

  • The place of entering, as a gate or doorway. 

  • The right to go in. 

  • The bow, or entire wedgelike forepart of a vessel, below the water line. 

  • The action of entering, or going in. 

  • The entering upon; the beginning, or that with which the beginning is made; the commencement; initiation. 

  • The causing to be entered upon a register, as a ship or goods, at a customhouse; an entering. 

  • The angle which the bow of a vessel makes with the water at the water line. 

verb
  • To put into a trance. 

  • To delight and fill with wonder. 

opening

noun
  • The first few measures of a musical composition. 

  • The first performance of a show or play by a particular troupe. 

  • A gap permitting passage through. 

  • The initial period when a show at an art gallery or museum is first opened, especially the first evening. 

  • A vacant position, especially in an array. 

  • An unoccupied employment position. 

  • In mathematical morphology, the dilation of the erosion of a set. 

  • An act or instance of making or becoming open. 

  • A time available in a schedule. 

  • An opportunity, as in a competitive activity. 

  • An act or instance of beginning. 

  • The first few moves in a game. 

adj
  • Pertaining to the start or beginning of a series of events. 

  • describing the first period of play, usually up to the fall of the first wicket; describing a batsman who opens the innings or a bowler who opens the attack 

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