useable vs operational

useable and operational both are adjectives.

Word	Noun	Adjective	Verb	Adverb
useable	No	Yes	No	No
operational	No	Yes	No	No

As adjectives, useable and operational are synonyms defined as:

Other synonyms of useable include functional, operable, usable.

useable (adjective)	operational (adjective)
convenient for use or disposal	(military) of or intended for or involved in military operations
fit or ready for use or service	pertaining to a process or series of actions for achieving a result
capable of being put to use	being in effect or operation
	fit or ready for use or service