operational vs usable

operational and usable both are adjectives.

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

As adjectives, operational and usable are synonyms defined as:

Other synonyms of operational include functional, operable, useable.

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