exciple

As nouns the difference between terms and exciple

is that terms is while exciple is (lichenology) the outer part of the fructification of most lichens.

As nouns the difference between exciplex and exciple

is that exciplex is (chemistry|physics) any complex, existing in an excited state, that is dissociated in the ground state while exciple is (lichenology) the outer part of the fructification of most lichens.