  Someone who uses the word ‘red’ in speaking or thinking would generally be held to be employing the same concept as a French person who uses ‘rouge’. Assuming that ‘rouge’ is a good translation of ‘red’, Sellars (1963) thought it convenient to have a general term by which to classify words that are functional counterparts in this way. Such a term is provided by Sellars’ dot quotes. Dot-quotes form a common noun true of items in any language that play the role performed in our language by the tokens exhibited between them, so any expression that is a functional counterpart to ‘red’ can be described as a ·red·. In Sellars’ terminology, the concept red is something that is common and peculiar to ·red·s.