I personify a lot of things, mostly organic things, but sometimes inanimate objects as well (mostly trees/living things, but sometimes, computers, cars, et cetera)
sound = texture/motion/feeling/shapes (I have a hard time explaining that one)
sound = time (also hard to explain)
Not sure how to categorise this last one, but words, writing, has an effect on me, so poetry, for example, fits into the sound category, even though it technically doesn't have a sound, I'm reading it in my head, so I'm 'hearing' sort of, what it would sound like if it did, because I experience what I would hear, if I did hear it. If you're synaesthetic, you get that. If you aren't, I know, it sounds bizarre!
More on Synaesthesia
Synaesthesia is defined here by Mirriam Webster's dictionary:
Main Entry: syn·es·the·sia Pronunciation: "si-n&s-'thE-zh(E-)& Function: noun Etymology: New Latin, from syn- + -esthesia (as in anesthesia) Date: circa 1891
: a concomitant sensation; especially : a subjective sensation or image of a sense (as of color) other than the one (as of sound) being stimulated
- syn·es·thet·ic /-'the-tik/ adjective
Dr Richard Cytowic, explains further "Synesthesia is a physical experience of the brain, not the product of imagination. As such, it is distinguished from metaphor and artistic contrivances such as colored music or son et lumière that deliberately join multiple senses. Some combinations occur more often than others. Sound–sight synesthesia, or colored hearing, is common whilst combinations involving taste and smell are rare. The most widespread synesthesia involves colored letters and numbers.
Some form of synesthesia may occurs in 1 in 200 people. It runs strongly in families, likely inherited as an x–linked dominant trait, which is why women outnumber men by at least 3:1. Synesthetes have superior memories.
Like most quirks of nature, the study of synesthesia reveals much about how ordinary brains work. In fact, Dr. Cytowic believes that synesthesia is a normal brain process that is prematurely displayed to consciousness in a minority of individuals. In other words, everybody is synesthetic—most of us just don’t know it."
