noun
niche
NEESH/niːʃ/
A specialized position, role, market, or area of interest.
The bow-repair specialist occupies a niche within the instrument shop.

Etymology
A wall recess or nook became a figurative fitted place in work, markets, or interests.
A specialized position, role, market, or area of interest.
The bow-repair specialist occupies a niche within the instrument shop.

A wall recess or nook became a figurative fitted place in work, markets, or interests.