As always when you are talking a technical field, language becomes very fluid and is constantly changing. In the full scale world I believe the word spoilers was used in connection to systems such as the P-61 as well a virtually ever glider/sailplane still to this day but all of these typically were never mixed ailerons and spoilers. The were normally separate surfaces positioned near mid cord and they killed lift to provide increased rate of descent or used differentially to provide roll control. The P-61 not only had these for primary roll control but also small conventional ailerons to provide primarily some tactile pilot feedback on the controls, something pure differential spoilers were/are poor at.
Spoilerons is something that I cannot think of a single application in the full scale world but its early this morning

and the pure use of mixed spoilers is OK but even the spoiler function is poor when used in this manner as there is excessive pitching when applied. This is something pure spoilers mounted near mid cord do not do. Those are a joy to use both in full scale and RC true spoilers do not effect any pitching at all.
John