anthology vs assortment

anthology

noun
  • An assortment of things. 

  • A collection of literary works, such as poems or short stories, especially a collection from various authors. 

  • A work or series containing various stories with no direct relation to one another. 

  • The study of flowers. 

assortment

noun
  • A collection of varying but related items. 

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