The word Ferate is misspelled against Ferrate, a noun meaning "A salt of ferric acid."
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Ferrate has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings fe & ate which should not be misspelled with single 'R'
Wrong Spelling:  fe-r-ate 
Correct Spelling:  fe-rr-ate 
Explore spell check of Ferrate to spell without errors.