lettuce vs merkin

lettuce

noun
  • long hair, as worn by an exemplar of bro culture 

  • The leaves of the lettuce plant, eaten as a vegetable; as a dish often mixed with other ingredients, dressing etc. 

  • United States paper currency; dollars. 

  • A strong yellow-green colour, like that of lettuce (also called lettuce green). 

  • An edible plant, Lactuca sativa and its close relatives, having a head of green and/or purple leaves. 

  • weed or marijuana 

merkin

noun
  • A woman's pubic wig. Worn for nude stage appearances and by women, originally after shaving their pubic hair to eliminate lice or for other reasons, now often as a fashion item. 

  • An American. 

  • A mop for cleaning cannon. 

  • The male counterpart of a beard, a companion to a lesbian to feign her straightness. 

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