Synesthesia

1. Synesthesia: A condition in with the senses are cross wired. Its when you see colours upon hearing a sound, or can actually taste words; It is the stimulation of one sense that causes an inappropriate stimulation of another
http://www.cerebromente.org.br/n17/mente/synaesthesia.htm

2. grapheme-color synesthesia: When people percieve particular colors when seeing a letter, word, or number.
http://www.ncbi.nlm.nih.gov/pubmed/19302164 

3. ordinal-linguistic personification: associating words, letters or numbers with a personality.
http://theparfaitprincey.wordpress.com/2010/03/05/ordinal-linguistic-personification/ 

  

4. number-form synesthesia: When a persons sees diagrams of numbers in their heads.

http://community.babycentre.co.uk/post/a11638125/number-form_synesthesia

5. sound-color synesthesia: when a persons hear sounds in color or sees colors in sounds.
http://articles.cnn.com/2009-02-09/health/synesthesia.genes_1_synesthesia-brain-regions-visual-areas?_s=PM:HEALTH

6. lexical-gustatory synesthesia: whenspeech sounds induce an involuntary sensation of taste.
http://home.comcast.net/~sean.day/WardSimner2003.pdf