What are the offensive players in football and what are their roles?

The offensive players are the quarterback, wide receivers, tight ends, guards, tackles, and running backs.
The quarterback passes or hands off the ball to put it into play, and is the leader and playmaker of the team.
The wide receivers catch the ball thrown by the quarterback.
The tight ends are the only players who can block the defense and go for a pass reception.
The guards and tackles keep the defense away.
The running backs receive the ball and run with it.