metier vs speciality

metier and speciality both are nouns.

Word	Noun	Adjective	Verb	Adverb
metier	Yes	No	No	No
speciality	Yes	No	No	No

As nouns, metier and speciality are synonyms defined as:

Other synonyms of metier include forte, long suit, specialty, strength, strong point, strong suit.

metier (noun)	speciality (noun)
an occupation for which you are especially well suited	the special line of work you have adopted as your career
an asset of special worth or utility	a distinguishing trait
	an asset of special worth or utility