여집합 (餘集合) · the complement of a set.
Written Ac — everything that is not in A.
In mathematics, a complement is everything that falls outside a given set.
The internet has its own sets of familiar answers, familiar formats, and established categories. We like to step outside them and make something small.
It might be a website.
It might become a product.
It might be a completely useless experiment.
yeoziphab is a collection of things outside the usual set.