Football, also known American football or gridiron football, is the most popular spectator sport in the United States. But most of us probably don’t know why it’s called "football" and not, say, tackleball or oblongball.
Why Do Some People Call Football “Soccer”?
Is it football or soccer? Name of the game explained
American Football - Quick Guide
Why is American football not called handball? Much Less ball kicking there than in soccer (the real FOOTBALL). - Quora
Why is American football called football? The historic context
Why Do Some People Call Football “Soccer”?
Why is American football called football? The historic context behind American football's name
Football - Simple English Wikipedia, the free encyclopedia
Why is American football called football? The historic context
A timeline of the Washington Football Team name change debate