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

Many children join a sports club.

Most politicians have joined a party.

A: the same meaning

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

Family members had been buried in the vault for centuries.

The bank kept their money safe in a large vault.

A: the same meaning

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

I'm leaving work early because I have a doctor's appointment.

He erred by the appointment of unsuitable men.

A:
different meanings