Hello Vincent,

I looked it up and found this:

1. 柔韧性 [róurènxìng] (soft+ resilient character)
2. 灵活性 [línɡhuóxìnɡ] (nimble +live character)
3. 易弯曲的 [yì wān qū de] (Easy winding)

They all mean flexible, the first is literal like

儿童的身体要比成人更有-柔韧性-
Childeren have more flexible bodies then adults.

the second is more figurative like in

我们处理事物也要讲究 -灵活性 -
When handling affairs, we should also pay attention to flexibility.

The third one
literally means easy wave

Roland