mons vs mountaintop

mons

noun
  • A mountain or extinct volcano on a planet or a moon. 

  • The pubic mound or mons pubis. In human anatomy or in mammals in general, the mons pubis (Latin for "pubic mound"), also known as the mons veneris (Latin, mound of Venus) or simply the mons, is the adipose tissue lying above the pubic bone of adult females, anterior to the pubic symphysis. The mons pubis forms the anterior portion of the vulva. 

mountaintop

noun
  • The summit of a mountain. 

adj
  • Situated or occurring on the summit of a mountain. 

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