There seems to be a group of 'doubled' words in Korean that often describe how something looks or moves, e.g. :
반짝반짝 - 'twinkle' or 'sparkle'
흔들흔들 - 'shake' or 'wobble'
빙글빙글 - to go round and round
Is there a special name in Korean for these kind of words?
(Further examples more than welcome - I really like these words!)