As nouns the difference between cubby and cabby
is that cubby is a small, confined space while cabby is a cabdriver, someone who drives a taxi.
cubby
English
Noun
(cubbies)
A small, confined space.
Derived terms
* cubbyhole, or cubby hole
* cubby house
cabby
English
Alternative forms
* cabbie
Noun
(cabbies)
(informal) A cabdriver, someone who drives a taxi.