practicable vs operable

practicable and operable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
practicable	No	Yes	No	No
operable	No	Yes	No	No

As adjectives, practicable and operable are synonyms defined as:

practicable (adjective)	operable (adjective)
capable of being done with means at hand and circumstances as they are	capable of being treated by surgical operation
usable for a specific purpose	usable for a specific purpose
	fit or ready for use or service