| Subject | English | Bulgarian |
| IT | common communications network/common systems interface | обща комуникационна мрежа/общ системен интерфейс |
| comp., MS | common gateway interface | интерфейс на стандартен шлюз (A server-side interface for initiating software services. For example, a set of interfaces that describe how a Web server communicates with software on the same computer. Any software can be a CGI program if it handles input and output according to the CGI standard) |