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

Polish your social manners.

He polished up the chrome until it gleamed.

A: different meanings

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

Use your head!

He doesn't know how to use a computer.

A: the same meaning

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

He started the company in his garage.

He only invests in large well-established companies.

A:
the same meaning