Exoteric and Outlying

Exoteric adjective - Suitable for the general public.

Outlying and exoteric are semantically related. in outside topic. In some cases you can use "Outlying" instead an adjective "Exoteric", when it comes to topics like external.

Outlying adjective - Relatively far from a center or middle.

Exoteric and outlying are semantically related. You can use "Exoteric" instead an adjective "Outlying".