* Distance learning is a broader term encompassing any learning that takes place when the student and teacher are not in the same physical location. This can include various methods of delivery, such as online courses, correspondence courses, television broadcasts, and even printed materials sent through the mail. The focus is on the *separation* of student and instructor.
* E-learning is a *subset* of distance learning. It specifically refers to learning that utilizes electronic media, primarily the internet. This includes online courses, webinars, virtual classrooms, interactive simulations, and other digital learning resources. The focus is on the *electronic* method of delivery.
Essentially, all e-learning is distance learning, but not all distance learning is e-learning. A correspondence course delivered via postal mail is distance learning but not e-learning. An online course is both distance learning and e-learning.