The word Seration is misspelled against Serration, meaning "having a toothed edge"
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Serration has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings se & ation which should not be misspelled with single 'R'
Wrong Spelling: se-r-ation
Correct Spelling: se-rr-ation
Find more incorrect spellings of Serration to spell right way.