over the top vs over-enthusiastic

over the top

adv
  • Over the parapet of a trench, especially at the start of a futile attack. 

  • Used other than figuratively or idiomatically: see over, the, top. 

adj
  • Delivered across the Internet to a television or similar device. 

  • Bold; beyond normal, expected, or reasonable limits; outrageous. 

over-enthusiastic

How often have the words over the top and over-enthusiastic occurred in a corpus of books? (source: Google Ngram Viewer )