Definition of 月とスッポン (つきとスッポン)
つき
                        月とスッポン
つきとスッポン
tsukitosuppon
expression, noun
•
                
two things that superficially similar but completely different, night and day, chalk and cheese, the Moon and a turtle(idiom )
Other readings:
                月とすっぽん【つきとすっぽん】
、月と鼈【つきとすっぽん】
                Related Kanji
| 月 | month, moon | 
| 鼈 | snapping turtle, fresh-water turtle |