aeon or eon /ēˈon/

1. A vast age
2. Eternity
3. The largest, or a very large division of geological time
4. A thousand million years (astronomy)
5. In Gnosticism, a power emanating from the supreme deity, with its share in the creation and government of the universe

• medalist
• medalists
• medalled
• ground-basses
• ground beef
• ground-beetle
• ground-beetles
• groundbreaking
• groundbreakings
• groundburst
• groundbursts
• ground cherries
• ground cherry
• ground control
• ground controller
• ground controllers
• ground controls
• ground cover
• ground covers
• ground crew
• ground crews
• ground-cuckoo
• ground-cuckoos
• ground-dove
• ground-doves