irregular vs privy

irregular

noun
  • One who does not regularly attend a venue. 

  • A soldier who is not a member of an official military force and who may not use regular army tactics. 

adj
  • without symmetry, regularity, or uniformity 

  • rough 

  • not regular; having sides that are not equal or angles that are not equal 

  • whose faces are not all regular polygons (or are not equally inclined to each other) 

  • nonstandard; not conforming to rules or expectations 

  • not following the regular or expected patterns of inflection in a given language 

privy

noun
  • A partaker; one having an interest in an action, contract, etc. to which he is not himself a party. 

  • An outdoor facility for urination and defecation, whether open (latrine) or enclosed (outhouse). 

  • A lavatory: a room with a toilet. 

  • A toilet: a fixture used for urination and defecation. 

adj
  • With knowledge of; party to; let in on. 

  • Private, exclusive; not public; one's own. 

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