operable vs usable

operable and usable both are adjectives.

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

As adjectives, operable and usable are synonyms defined as:

Other synonyms of operable include functional, operational, useable.

operable (adjective)	usable (adjective)
capable of being treated by surgical operation	convenient for use or disposal
usable for a specific purpose	fit or ready for use or service
fit or ready for use or service	capable of being put to use