If the legislative branch makes the laws then the executive branch does what with the laws?

The executive branch, the president, can either veto (deny) the law or accept it. if he accepts it the bill becomes a law

Update 1:

The executive branch has the responsibility to enforce the laws that the government enacts and has the right to check the legislature by vetoing (deny) a bill or signing it into law. Should the executive branch veto a bill, the legislature has the right to override the veto by passing the legislation again with 2/3 of both the House and the Senate. If and only if this happens is the veto of the executive branch is vacated and automatically becomes law that the executive branch must enforce.