| Subject | English | Turkish |
| comp., MS | proof of concept | kavram kanıtı (The verification that the selected technology performs according to pre-established criteria in a lab environment designed to simulate the production environment) |
| NGO | proof of legal entitlement to adequate accommodation lease or rental agreement | Yerel standartlara uygun konut için yasal hak |
| comp., MS | proof of purchase | satın alma belgesi (The original receipt or other document which confirms acquisition of a particular product) |
| NGO | proof of qualification | Yeterlilik Belgesi |
| NGO | proof of qualifications | Yeterlilik belgesi (Karne,diploma, bonservis) |
| austrian | proof of qualifications | Yeterlilik belgesi (Karne,diploma, bonservis) |