| Subject | English | Irish |
| transp., mil., grnd.forc., el. | control-command and signalling subsystem | fochóras um rialú agus ceannas agus um chomharthaíocht |
| transp., mil., grnd.forc., tech. | "EC" declaration of verification of the subsystem | dearbhú CE maidir le fíorú an fhochórais |
| transp., mil., grnd.forc., tech. | "rolling stock" subsystem | fochóras rothstoic |
| gen. | traveler subsystem | fochóras do thaistealaithe |
| gen. | traveller subsystem | fochóras do thaistealaithe |
| comp., MS | trusted subsystem | fochóras iontaofa (A method of communication in which two-way trust is established between two server components. Each server component communicates with the other component by using an account that is authorized to perform privileged actions such as retrieving files and settings) |
| gen. | vehicle subsystem | fochóras feithicle |