The word Croping is misspelled against Cropping, which is present continuous of "Crop"
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Cropping has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings cro & ing which should not be misspelled with single 'P'
Wrong Spelling:  cro-p-ing 
Correct Spelling:  cro-pp-ing 
Find more incorrect spellings of Cropping to spell right way.