Q: Does "ensure" have the same meaning in the following two sentences?

This nest egg will ensure a nice retirement for us.

Our exertions ensured a good outcome.

A: the same meaning

Q: Does "block" have the same meaning in the following two sentences?

Block the wheels of a car.

Block his election.

A: different meanings

Q: Does "spring" have the same meaning in the following two sentences?

I spent my spring holidays in Morocco.

You can visit me in the spring, when the weather is bearable.

A:
the same meaning