Beside "leben" - to live and "Leben" - life, are there other nouns which have the same form as their verbs?
While Erik is completely right, I don't think that you refer to the gerund. We have to differ between living (what Erik's answer is about), and life, lifetime or existence (what your question is about).
There are a couple of words which have a further meaning than just the action of doing something.
- essen (to eat) - Essen (food, meal) (Note: Also a German town)
- springen (to jump) - Springen (in sports, e.g. "Skispringen" (ski-jumping))
- lachen (to laugh) - Lachen (laugh, laughter (the sound))
- braten (to fry, to barbecue, to roast) - Braten (roast (meat))
- wagen (to risk, to dare) - Wagen (car, wagon, trolley (Einkaufswagen))
- leiden (to suffer) - Leiden (complaint (illness), sickness, disease) (also distress (situation) and affliction (pain))
- fangen (to catch) - Fangen (tag (children's game))
- streichen (to paint) - Streichen (gait fault of a horse)
- regen (to stir) - Regen (rain)
- wissen (to know) - Wissen (knowledge)
- trinken (to drink) - Trinken (drink) (Note: Getränk is more common)
- kommen (to come) - Kommen (arrival)
- leben (to live) - Leben (life, lifetime)
If someone knows a word that is missing yet, please feel free to add or place them in the comments.