SUMMARY
1. Definition of marriage and civil union and their constitutional protection - 2. Equalities and differences between marriage and civil unions - On the differences between marriage and civil unions: the obligation of fidelity and collaboration and the institution of separation  - 4. On the differences between marriage and civil unions. Legitimizing adoption and adoption in particular cases - 5. On the differences between marriage and civil unions. The legal regime of the surname, age, inconsummation - 6. Marriage and civil unions: the point of view of jurisprudence - 7. Tradition and love -