| Architektur | architecture |
| Architekt | architect building designer |
| Architektin | architect |
| Architekturmuster | architectural pattern |
| Archiater | archiater |
| Archaikum | Archaean |
| Archetyp | archetype |
| Archilexem | archilexeme |
| Archimedes | Archimedes |
| Archipel | archipelago |
| Archisemem | archisememe |
| Architrav | architrave |
| Archivar | archivist |
| Innenarchitektur | interior design interior architecture |
| Orchester | orchestra |
| Schiebetür | sliding door |
| Amphitheater | amphitheater amphitheatre |
| Parasitentum | parasitism |
| Arbeiter | worker workman |
| Arbiter | arbitrator |