The word Bol is misspelled against Boll, meaning "A round pod or seed-capsule, as a flax or cotton."
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Boll has double 'll' in the end mispronounced as 'l'
Remember double 'LL' appears in the end of this word which should not be misspelled with single 'L'
Wrong Spelling:  bo-l 
Correct Spelling:  bo-ll 
Find more incorrect spellings of Boll to spell right way.