What is a session vs. a term?

Each regular TERM (Fall and Spring) is composed of 20 weeks and broken into three 4-week and one 8-week modules referred to as SESSIONS. The Fall term begins in July and ends in December. The Spring term begins in January and ends in June. There is also a 12-week Summer term that has limited course offerings. The Summer term starts in May and ends in August.  Courses at Dallas International may last more than one session.  For example, many 8-week courses are offered through sessions 2 and 3.