serviceable vs functional

serviceable and functional both are adjectives.

Word	Noun	Adjective	Verb	Adverb
serviceable	No	Yes	No	No
functional	No	Yes	No	No

serviceable (adjective)	functional (adjective)
ready for service or able to give long service	designed for or capable of a particular function or use
intended or able to serve a purpose without elaboration	involving or affecting function rather than physiology
capable of being put to good use	relating to or based on function especially as opposed to structure
	(of e.g. a machine) performing or capable of performing
	designed for or adapted to a function or use
	fit or ready for use or service