Speciality

A particular or peculiar case; a particularity.

See Specialty, 3.

The special or peculiar mark or characteristic of a person or thing; that for which a person is specially distinguished; an object of special attention; a special occupation or object of attention; a specialty.

An attribute or quality peculiar to a species.

the special line of work you have adopted as your career; "his specialization is gastroenterology"

an asset of special worth or utility; "cooking is his forte"