buoy·an·cy 
(boiən-sē, byən-)
(boiən-sē, byən-)n.
1.
a. The tendency or capacity to remain afloat in a liquid or rise in air or gas.
b. The upward force that a fluid exerts on an object less dense than itself.
2. Ability to recover quickly from setbacks; resilience.
3. Lightness of spirit; cheerfulness.
- bloodletting
- bloodline
- blood meal
- bloodmobile
- blood money
- blood orange
- blood plasma
- blood platelet
- blood poisoning
- blood pressure
- blood pudding
- blood red
- blood-red
- blood relation
- blood relationship
- bloodroot
- blood sausage
- blood serum
- bloodshed
- bloodshot
- blood sport
- bloodstain
- bloodstained
- bloodstone
- bloodstream