| aktiver Vulkan | active volcano |
| ruhender Vulkan | dormant volcano |
| Supervulkan | supervolcano |
| Aktionsplan | action plan |
| Aktivieren | activation |
| aktivieren | activate |
| Aktivierung | activation |
| verulken | banter |
| Kryovulkan | cryovolcano |
| Schichtvulkan | stratovolcano |
| Schildvulkan | shield volcano |
| Aktenstück | document |
| Aktien | equity |
| Aktienkapital | equity |
| Aktienmarkt | stock market |
| Aktiva | asset |
| Aktivismus | activism |
| Aktendulli | filing clip filing stripe |
| Akteurin | actress |
| Aktienkurs | stock price |