The word Gibous is misspelled against Gibbous, an adjective meaning "Hunched; hump-backed."
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Gibbous has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Gi & ous which should not be misspelled with single 'B'
Wrong Spelling: Gi-b-ous
Correct Spelling: Gi-bb-ous
Check more misspelled words of Gibbous to spell it correct.