The word Comb is misspelled against Coomb, a noun meaning "A dry measure of four bushels, or half a quarter."
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Coomb has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings c & mb which should not be misspelled with single 'O'
Wrong Spelling:  c-o-mb 
Correct Spelling:  c-oo-mb 
Find more incorrect spellings of Coomb to spell right way.