Pray tell, when was this mythical era when a sizable group of people actually made this distinction and used them as two separate concepts? Warning: this is a t

Pray tell, when was this mythical era when a sizable group of people actually made this distinction and used them as two separate concepts? Warning: this is a trick question, I'm almost old, so I have actual first-hand recollection of these days of yore you seem to be lamenting.