The word Concavenes is misspelled against Concaveness, a noun meaning "Hollowness; concavity."
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Concaveness has double 'ss' in the end mispronounced as 's'
Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  concavene-s 
Correct Spelling:  concavene-ss 
Find more incorrect spellings of Concaveness to spell right way.