For me up to about 15 years ago BBQing meant cooking food over direct fire outside. Almost always done on a BBQ (Weber grill) I started doing real BBQ about 25 years ago but had kept the same term for both.
As I progressed in the world of true Qing my language changed too. Now I either grill or I BBQ and the family has learned the difference.
In Calif. we always invited people over for a BBQ, which could have meant any meat cooked over a grill. Rarely was it true Q.