The word Ferer is misspelled against Ferrer, an adjective meaning "compar. of Fer."
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Ferrer has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings fe & er which should not be misspelled with single 'R'
Wrong Spelling:  fe-r-er 
Correct Spelling:  fe-rr-er 
Explore spell check of Ferrer to spell without errors.