cush-cush vs so-and-so

cush-cush

noun
  • Synonym of couche-couche 

  • A tropical American yam with small yellow-skinned edible tubers: Dioscorea trifida 

so-and-so

noun
  • Used in place of epithets such as SOB, bastard, etc.. 

  • Some thing or things. 

  • A placeholder name for a person or thing, used when a name is not known; a generic name. 

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