catering vs preoccupation

catering

noun
  • The act of one who caters (to something). 

  • The business of providing food and related services; foodservice. 

  • The business of providing such services for special occasions. 

preoccupation

noun
  • The act of occupying something before someone else. 

  • The state of being preoccupied or an idea that preoccupies the mind; enthrallment. 

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