"Everyday parlance" refers to the language or words that people commonly use in their daily lives. It includes the everyday vocabulary and expressions that are easily understood by most people. Full definition
Theologian Karl Rahner once wrote,»... what is called knowledge in everyday parlance, is only a small island in a vast sea that has not been traveled... Hence the existential question for the knower is this: Which does he love more, the small island of his so - called knowledge or the sea of infinite mystery? (religion-online.org)
The notion of vernacular — a form of everyday parlance specific to a social group or region — manifests in his work through a graphic and discursive style developed in the context of globalized art production. (bard.edu)
As for everyday parlance, I agree with you. (judithcurry.com)