prettiful vs swanlike

prettiful

adj
  • pretty, beautiful, cute 

swanlike

adj
  • Beautiful like a swan 

  • Similar to a swan or a characteristic of it, especially in elegance or grace 

adv
  • In a swanlike way 

  • Beautifully like a swan 

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