Vitality (noun)

1. The state of being strong and active; energy and enthusiasm.
2. The ability to survive and grow.

Origin:

From latin vitalis meaning "life".

Examples:

1. The company was able to maintain its vitality despite the difficult market conditions.
2. The city's downtown area was revitalized with new businesses and vitality.
3. The team's coach brought new vitality to the team.
4. The new medicine has given the patient a renewed vitality.
5. The child's vitality was evident in her constant movement and play.