Mills-and-Boon vs sentimental

Mills-and-Boon

sentimental

adj
  • Characterized by sentiment, sentimentality or excess emotion. 

  • Derived from emotion rather than reason; of or caused by sentiment. 

  • Romantic. 

How often have the words Mills-and-Boon and sentimental occurred in a corpus of books? (source: Google Ngram Viewer )