instillation vs mishmash

instillation

noun
  • The act of instilling. 

  • That which is instilled. 

mishmash

noun
  • A collection containing a variety of miscellaneous things. 

verb
  • To mix together, especially in a confused way. 

  • To become mixed together. 

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