Hypocognition, a term introduced to modern behavioral science by anthropologist Robert Levy, means the lack of a linguistic or cognitive representation for an object, category, or idea.
From "Unknown Unknowns: The Problem of Hypocognition," Scientific American
This phenomenon suggests that we only know what we have language for. This includes realities and possibilities. It is perhaps one of the most significant differentiators in the options people have that differentiates their potential for wellbeing and meaning. It's an argument for discovering and creating a richer landscape of nuances in any domain of life, work and love.