catering vs foodservice

catering

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

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

  • The business of providing such services for special occasions. 

foodservice

noun
  • The business of providing food and related services. 

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