geezer vs mother ship

geezer

noun
  • Term of address for a male. 

  • An old person, usually a male, typically a cranky old man. 

  • Someone affable but morally dubious; a wide boy. 

mother ship

noun
  • Fond term of address for one's mother. 

  • A vessel or aircraft that serves or carries a smaller vessel or vessels that operate independently from it. 

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