The timeline of soccer is way to big for anyone to explain. Sorry.
its like the snowball effect
Lmfao soccer is the american word for football obviously americans know what soccer is.
You hold the directional button the way you want to swerve it. It is kind of simple!
You can't. Simple as that.
futbol simple as that
A professional soccer player is a deticated athlete that gets paid to play on a team.
To play soccer
It is a wheel and axle
A nocturnal animal means its an animal that sleeps through the day, and hunts during the night. That's the most simple way i can explain that.
The same way you explain them to adults - tell them what the idiom means. You might have to use simple terms, but kids can understand idioms just as well as any other part of the language.