Respuesta :
A special session (also extraordinary session) is a period when the body convenes outside of the normal legislative session. In other cases, special session may be convened to address special topics, or emergencies such as war or natural disaster.
A joint session of the United States Congress is a gathering of members of the two chambers of the bicameral legislature of the federal government of the United States: the Senate and the House of Representatives.
Answer:
A special session is a meeting of either chamber of Congress outside of the two regular sessions held during a given year. A joint session is a meeting for both the House of Representatives and the Senate together.
Explanation: