In the law, some adjectives can throw you. Don't let them. Here are some words that 'have to do with' . . . something. These are big words that are easy to cut down to size. Match the key words with a simplified definition.
Conjugal has to do with marriage.
Marital has to do with marriage.
Matrimonial has to do with marriage.
Nuptial has to do with marriage (prenuptial agreement).
Discriminatory has to do withdiscrimination.
Domiciliary has to do with domicile (where you have your principal home).
Evidentiary has to do with evidence (evidentiary hearing).
Natalhas to do with birth(prenatal,neonatal,postnatal).
Pecuniary has to do with money.
Penal has to do with punishment (penalty, penalty box, penalize).
Personality has to do with personal property.
Proprietary has to do with ownership (proprietor).