| Subject | English | Hungarian |
| comp., MS | Collaboration Data Objects | Collaborative Data Objects (An application programming interface (API) that allows users and applications high-level access to data objects in Exchange. CDO defines the concept of different object classes, including messages, posts, appointments, and tasks) |
| comp., MS | collaboration diagram | együttműködési diagram (An interaction diagram that shows, for one system event described by one use case, how a group of objects collaborate with one another) |
| comp., MS | collaboration service provider | együttműködési szolgáltató (A company which provides online collaboration services (sharepoint sites, message boards, etc) to businesses or organizations) |
| transp. | Organisation for Collaboration between Railways | Vasúti Együttműködési Szervezet |
