Adult education and Email

Adult education noun - A course (via lectures or correspondence) for adults who are not otherwise engaged in formal study.

Email and adult education are semantically related. In some cases you can use "Email" instead a noun phrase "Adult education".

Email noun - (computer science) a system of world-wide electronic communication in which a computer user can compose a message at one terminal that can be regenerated at the recipient's terminal when the recipient logs in.

Adult education and email are semantically related. You can use "Adult education" instead a noun "Email".