The word mawlā is not restricted to one relationship. It can describe connections involving emancipation, alliance or covenant, conversion to Islam, and other historical associations. Without context, its intended meaning may remain uncertain.
Through slavery or emancipation: a relation arising from former servitude and freeing.
Through alliance: a link established by a covenant.
Through conversion: an affiliation associated with embracing Islam through another person.
These are distinct social relationships, not proof of common blood ancestry. A specific individual's designation requires explicit identification.