crackerjack vs irregular

crackerjack

noun
  • A U.S. Navy sailor. 

  • The traditional blue uniforms of the enlisted men of the US Navy. 

  • An expert or top-rated individual (e.g., a marksman). 

  • An exceptionally fine or excellent thing or person. 

  • Popcorn candied in molasses-flavored caramel and peanuts. 

adj
  • Expert, top-rated or high-performing. 

  • Referring to clothing items (pants, jersey, collar) that constitute the traditional blue uniform of the enlisted men of the US Navy. 

  • Exceptionally fine or excellent; top-notch; high quality. 

irregular

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

  • One who does not regularly attend a venue. 

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 

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