The word Sponfuls is misspelled against Spoonfuls, which is plural of "Spoonful"
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Spoonfuls has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings sp & nfuls which should not be misspelled with single 'O'
Wrong Spelling:  sp-o-nfuls 
Correct Spelling:  sp-oo-nfuls 
Check more misspelled words of Spoonfuls to spell it correct.