0 the way in which people are involved with each other -- relation [ feminine ]
the relationship between the two governments la relation entre les deux gouvernements
a professional relationship une relation professionnelle
1 a romantic involvement between two people -- liaison [ feminine ]
Is he in a relationship right now? A-t-il quelqu’un dans sa vie en ce moment ?
2 a connection or link -- rapport [ masculine ]
3 the friendship, contact, communications etc which exist between people -- relation
4 the fact that, or the way in which, facts, events etc are connected -- relation
5 the state of being related by birth or because of marriage. -- lien de parenté