The word Waterfal is misspelled against Waterfall, a noun meaning "A certain kind of neck scarf."
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Waterfall has double 'll' in the end mispronounced as 'l'
Remember double 'LL' appears in the end of this word which should not be misspelled with single 'L'
Wrong Spelling:  waterfa-l 
Correct Spelling:  waterfa-ll 
Explore spell check of Waterfall to spell without errors.