The word Calosity is misspelled against Callosity, meaning "The state of being hard and insensible."
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Callosity has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings ca & osity which should not be misspelled with single 'L'
Wrong Spelling:  ca-l-osity 
Correct Spelling:  ca-ll-osity 
Find more incorrect spellings of Callosity to spell right way.