assortment vs codification

assortment

noun
  • A collection of varying but related items. 

codification

noun
  • The process of precisely formulating a statement, such as a code of laws. 

  • The act or result of arranging something into a code; the act of setting down a body of knowledge in a systematic way. 

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