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

While we're in Brighton, let's get a stick of rock!

He threw a rock at me.

A: different meanings

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

It takes a lot of courage to be successful in business.

A great part of courage is the courage of having done the thing before.

A: the same meaning

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

He will hold office until the spring of next year.

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

A:
the same meaning