longbeard vs senex

longbeard

noun
  • A man with a long beard. 

  • Synonym of greybeard (“an old man”) 

  • Synonym of greybeard (“experienced long-time member of a group”) 

  • Synonym of greybeard (“a bellarmine”) 

senex

noun
  • An older or old man. 

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