American football vs footer

American football

noun
  • A game similar to rugby football played on a field of 100 yards long and 53 1/3 yards wide (with two 10 yard-long endzones) in which two teams of 11 players attempt to get an ovoid ball into each other's territory. 

footer

noun
  • Football / soccer. 

  • Something that measures a stated number of feet in some dimension. 

  • Someone who has a preference for using a certain foot. 

  • A line of information printed at the bottom of a page to identify the contents. (Compare foot in printing.) 

verb
  • To meddle with or pass time without accomplishing anything meaningful. 

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