| Subject | English | German |
| AI. | AGE system | AGE-System ("Versuch zu generalisieren", Umgebung zur Entwicklung von Blackboard-Systemen) |
| gen. | age verification system | Altersverifikationssystem |
| agric. | age-class system | Altersklassenmethode |
| agric. | old-age pension system | Pension |
| agric. | old-age pension system | Altersversorgung |
| social.sc., hobby | Pan-European Game Information age rating system | PEGI-Einstufungssystem |
| gen. | three-age system | Dreiperiodensystem |