"Object-Relational Impedance Mismatch"[1] is been around for decades. Martin Fowler[2] and others who are deeply technical (think Sr. architects, CTOs) use this all the time.

[1] https://en.wikipedia.org/wiki/Object%E2%80%93relational_impe... [2] https://youtu.be/qI_g07C_Q5I?t=98