The word Masora is misspelled against Massora, a noun meaning "Same as Masora."
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Massora has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings ma & ora which should not be misspelled with single 'S'
Wrong Spelling:  ma-s-ora 
Correct Spelling:  ma-ss-ora 
Find more incorrect spellings of Massora to spell right way.