What action occurs in parliamentary governments but not in prsidential governments?

In parliamentary governments, the executive branch derives its legitimacy from and is directly accountable to the legislature, often leading to a vote of confidence or no confidence that can result in the government's dismissal. This mechanism allows for the government to be replaced without a full election. In contrast, presidential governments typically have a separation of powers where the executive is independently elected and cannot be easily removed by the legislature, except through processes like impeachment.