speciality vs foible

speciality and foible both are nouns.

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

As nouns, foible is a hyponym of speciality; that is, foible is a word with a more specific, narrower meaning than speciality:

speciality: a distinguishing trait
foible: a behavioral attribute that is distinctive and peculiar to an individual

Other hyponyms of speciality include idiosyncrasy, mannerism.

speciality (noun)	foible (noun)
the special line of work you have adopted as your career	the weaker part of a sword's blade from the forte to the tip
a distinguishing trait	a behavioral attribute that is distinctive and peculiar to an individual
an asset of special worth or utility	a minor flaw or shortcoming in character or behavior.