Definitons

1. Synesthesia stimulation causes reaction of a sense typically associated with another sense

2. grapheme-color synesthesia: perceiving a certain color when seeing a letter word or number

3. ordinal-linguistic personification the involuntary and automatic tendency in certain individuals to attribute animate-like qualities  

4. number-form synesthesia: Numbers months and years have a defined shape.

5. sound-color synesthesia: Color as a response to a certain sound

6. lexical-gustatory synesthesia: Words have taste.