ostium vs recess

ostium

noun
  • A small opening or orifice, as in a body organ or passage. 

  • Any of the small openings or pores in a sponge. 

  • The mouth of a river. 

recess

noun
  • An inset, hole, hollow space or opening. 

  • A small space created by building part of a wall further back from the rest. 

  • A decree of the imperial diet of the old German empire. 

  • A time of play during the school day, usually on a playground. 

  • A remote, secret or abstruse place. 

  • A break, pause or vacation. 

  • A place of retirement, retreat, secrecy, or seclusion. 

  • A period of time when the proceedings of a parliament, committee, court of law, or other official body are temporarily suspended. 

verb
  • To take or declare a break. 

  • To appoint, with a recess appointment. 

  • To make a recess in. 

  • To inset into something, or to recede. 

  • To suspend (formal proceedings) temporarily. 

  • To place in a recess. 

  • To suspend its proceedings for a period of time. 

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