One difference between the two types of government is the executive branch. In the parliamentary executive, there is a head of the state or the Queen in the British Monarchy who represents and manifests the state and its character. The job is usually hereditary, and the position is given to a member of the family. In addition, in this type of government it also has a chief executive who performs ceremonial duties of the office, and is a full-time politician but does not perform the symbolic activities. In the Presidential executive, the president holds both positions as a head of state along with a chief executive. The chief executive and the president share such jobs as coordinating government policymaking, and such things as being assisted by cabinets where people head separate departments of governments.
The president also share the same responsibilities as the head of state in their term they will do such things as host receptions, lay wreaths on tombs, receive ambassadors, and perform much government required ceremonial jobs. The legislative and the executive branch both are very different between the governments. In the presidential government the executive and the legislative are two different branches in which "check up" on each other with not on branch having more power than another. With the parliamentary system, this is different, with the executive and legislative combined. This means the legislative does not freely provide a significant check on power of the executive. Instead, the jobs of the branches are for the executive to lead and then the legislature's part is to follow in the decisions..