Rice= is mainly using ugly cheap ass parts that make the car look cheap and stupid. ie: neons, vinyl, useless crap.

JDM= Very similiar to rice. Parts that people buy for 5x their worth. Usually small tid bits that came stock on hondas in japan. ie: amber lighting (similiar to getting neons), jdm coin slots, jdm badges.

There is another form of cars that has been around for a while and is not mentioned often. It is a CLEAN car.

Clean= Cars that have good quality parts with owners who buy what pleases them.

I personally just pic and choose parts. Doesnt matter where they come from or who makes them. If its nice then its nice. Different strokes for different folks.