special vs speciality

special and speciality both are nouns.

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

special (noun)	speciality (noun)
a special offering (usually temporary and at a reduced price) that is featured in advertising	the special line of work you have adopted as your career
a television production that features a particular person or work or topic	a distinguishing trait
a dish or meal given prominence in e.g. a restaurant	an asset of special worth or utility

special (adjective)	speciality (adjective)
for a special service or occasion
first and most important
adapted to or reserved for a particular purpose
having a specific function or scope
surpassing what is common or usual or expected
added to a regular schedule
unique or specific to a person or thing or category