A foul in which a player knocks the ball forward.
No such thing is a knock down, but there is a knock on.
Rugby
There are no Knock-ons in soccer. You are thinking about rugby or touch.
A rugby player can deliberately knock the ball back, but he/she cannot deliberately knock it forward.
no
Its classes as a "Knock on"
When the ball drops FORWARD from a players hand.
when a try is held up, when there is knock on
A secondary or unintended effect of an action. I suspect it is a term taken from rugby.
can you clarify what you mean by "rugby bridges"
The ball coming off the forward running player who drops the ball.
It means knock, knock!