irregular vs vanilla

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 

vanilla

noun
  • Someone who is not into fetishism. 

  • The extract of the fruit of the vanilla plant. 

  • The distinctive fragrant flavour/flavor characteristic of vanilla extract. 

  • Any tropical, climbing orchid of the genus Vanilla (especially Vanilla planifolia), bearing podlike fruit yielding an extract used in flavoring food or in perfumes. 

  • The fruit or bean of the vanilla plant. 

  • A yellowish-white colour, like that of vanilla ice cream. 

  • An unmodded version of a game. 

  • Any artificially produced homologue of vanilla extract, principally vanillin produced from lignin from the paper industry or from petrochemicals. 

adj
  • Plain; conventional; unimaginative. 

  • Standard, plain, default, unmodified, basic. 

  • Not kinky, not involving BDSM. 

  • Of vanilla. 

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