A homosexual relationship is a sexual or romantic relationship between people of the same sex. Homosexual or same-sex marriages refer to the institutionalized recognition of these relationships in marriage form. Civil unions might also exist in countries where same-sex marriages are not recognized.
Homosexual relationships are not strictly related to the participants’ sexual orientation. Since people of different orientations might participate in homosexual relationships, there are some activists who argue that calling same-sex relationships as lesbian relationships or gay relationships is actually a kind of bisexual erasure.