Probably so. The Official NFL football is about $90.00 without Autographs compared to a replica which isn't quite so expensive.
There really is not much of a difference between unofficial and non-official. They both mean non confirmed and non formal.
A minor official is shorter than a main official.
The first official source of college football news was the NCAA. The first college football game was between Princeton and Rutgers University in 1869.
The difference is the weight. Soccer shoes are way lighter than football shoes.
diff between official wife and unofficial wife
Highschool footballs are smaller
It the same but the Australian says soccer and the English way is Football
Signed autographThere is no difference between signed memorabilia and autographed memorabilia. It is just deference in terminology. A signed baseball is the same as an autographed baseball and the same value. An autograph is signed. You could sign a check or a document but the signature would not be considered an autograph. You sign a baseball or a photo and the signature is an autograph.
No.
weight limit and grade requirements
In both country's they have football, but in Australia, they have Australian rules football, and in Germany, they have Association football. That is an example.
Signature = Name that is signed to acknowledge a purpose. Autograph = Name that is signed for no purpose but may have material or sentimental value.