As nouns the difference between realizability and practicality
is that realizability is the property or characteristic of being realizable while practicality is (uncountable) the state of being practical or feasible.
realizability
English
Noun
(-)
The property or characteristic of being realizable.
Antonyms
* unrealizability
practicality
English
Noun
(practicalities)
(uncountable) The state of being practical or feasible.
Antonyms
* impracticality