| Subject | English | Basque |
| environ. | bilateral convention An international agreement, especially one dealing with a specific matter, involving two or both sides, factions, or the like | bi aldeko hitzarmen |
| environ. | global convention A worldwide assembly of national, political party or organizational delegates, or the pact or the agreement that arises from such an assembly that forms, often, the preliminary to an international treaty | hitzarmen orokor |
| environ. | international convention Treaties and other agreements of a contractual character between different countries or organizations of states creating legal rights and obligations between the parties | nazioarteko hitzarmen |
| environ. | regional convention An assembly of national, political party or organizational delegates representing persons or the interests of a specific geographic area, or the pact or the agreement that arises from such an assembly | eskualdeko hitzarmen |
