Custom
tradtions
De facto segregation
de facto segregation
* tradition * ritual, * a practice of . . .
tradtions
custom, practice
The noun custom (accepted practice or habit) has the related verb "to accustom."The adjective custom (special, made-to-order) has the related verb "to customize."
yep
A custom is a habitual practice; the usual way of acting in given circumstances.
de facto segregation
Ceremony, tradition, custom, convention, practice, and routine.