Rugby invented the word Touch Down when scored, so why not say touchdown instead of try?

Question

and in the other hand, American football uses Touchdown when score, and they don't even touch the dam# ball down... I Love Rugby though.....

Answer 1

Rugby was invented before American football, and since the term "touching the ball down" was an explanation of what a try was, American footballers decided to take the term and make it the name of their try.