A Niche

(architecture) A cavity, hollow, or recess, generally within the thickness of a wall, for a statue, bust, or other erect ornament. Hence, any similar position, literal or figurative. Synonym: **nook
(ecology) A function within an ecological system to which an organism is especially suited.
(by extension) Any position of opportunity for which one is well-suited, such as a particular market in business. Synonyms: **specialty, specialization,
(Islam) An arrow woven into a prayer rug pointing in the direction of qibla.