The word Ballrom is misspelled against Ballroom, a noun meaning "A room for balls or dancing."
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Ballroom has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings ballr & m which should not be misspelled with single 'O'
Wrong Spelling:  ballr-o-m 
Correct Spelling:  ballr-oo-m 
Find more incorrect spellings of Ballroom to spell right way.