Corasion or Corrasion: How To spell?
The word Corasion is misspelled against Corrasion, a noun meaning "The erosion of the bed of a stream by running water, principally by attrition of the detritus carried along by the stream, but also by the solvent action of the water."
Corrasion has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings co & asion which should not be misspelled with single 'R'
Wrong Spelling:  co-r-asion  Correct Spelling:  co-rr-asion 
Find more incorrect spellings of Corrasion to spell right way.