Semantic dyslexia

Semantic Dyslexia is, as the name suggests, a subtype of the group of cognitive disorders known as dyslexia. Those who suffer from semantic dyslexia are unable to properly attach words to their meanings in reading and/or speech. When confronted with the word 'diamond', they may understand it as 'sapphire', 'shiny' or 'diamonds'; when asking for a bus ticket, they may ask for some paper or simply 'a thing'.

Semantic Dyslexia may be a sign of so-called deep dyslexia.