entrance vs staircase

entrance

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

  • 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 action of entering, or going in. 

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

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

  • 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. 

staircase

noun
  • A set of locks (enclosed sections of waterway) mounted one above the next. 

  • A flight of stairs; a stairway. 

  • A connected set of flights of stairs; a stairwell. 

verb
  • To modify (a signal, a graph, etc.) to reduce a smooth curve to a series of discrete steps. 

  • To increase one's share in a co-ownership. 

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