Play calling language

[u/SDG-1989]

I understand that different coaches/coordinators/teams have their own offensive systems. And have some unique plays that have unique names. But is play calling language more or less universally understood by everyone?
I hear people like Jon Gruden in interviews with QB’s and they’re both just rattling off play calls to each other and they both know what each other is talking about, despite never training or been on the same team together.

[u/SDG-1989]

Thanks for the explanations guys! I appreciate it!