This is referencing customer, product, and business language communities. IME it often applies equally well to friction between dev, sec, and SRE.
“Conflicts happen when one party applies their language to a party that is using a different language. It doesn’t translate automatically. So it’s up to us to create systems that not only translate, but that help achieve each others’ goals.”
https://longform.asmartbear.com/three-languages/