nursery rhyme vs rhapsody

nursery rhyme

noun
  • A short poem or song for children, mostly anonymous or handed down by folklore 

rhapsody

noun
  • An epic poem, or part of one, suitable for uninterrupted recitation. 

  • An exaggeratedly enthusiastic or exalted expression of feeling in speech or writing. 

  • An instrumental composition of irregular form, often incorporating improvisation. 

verb
  • Followed by about, on, over, or upon: to speak with exaggerated or rapturous enthusiasm. 

  • To say (something) with exaggerated or rapturous enthusiasm. 

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