mons pubis vs pubic hair

mons pubis

noun
  • A fleshy protuberance over the pubic bones that becomes covered with hair during puberty. 

pubic hair

noun
  • The hair that grows in the pubic region from puberty. 

  • a single hair growing in the pubic region 

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