encomium vs recommendation

encomium

noun
  • Warm praise, especially a formal expression of such praise; a tribute. 

  • The eighth exercise in the progymnasmata series. 

  • A method within rhetorical pedagogy. 

  • A general category of oratory. 

  • A genre of literature that included five elements: prologue, birth and upbringing, acts of the person's life, comparisons used to praise the subject, and an epilogue. 

recommendation

noun
  • A commendation or endorsement. 

  • An act of recommending. 

  • A suggestion or proposal about the best course of action (with adpositions including "about" for the context and "to" for the course of action) 

  • That which is recommended. 

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