Question: "unit" used in the same way in the following two sentences?

He was a member of a special police unit.

After the battle the soldier had trouble rejoining his unit.
Answer: different meanings
Question: "convention" used in the same way in the following two sentences?

Political convention.

The EU installed an inter-institutional Convention to draft a European constitution.
Answer: the same meaning
Question: "audience" used in the same way in the following two sentences?

Every artist needs an audience.

The broadcast reached an audience of millions.
Answer: the same meaning
Question: "hold" used in the same way in the following two sentences?

I hold with those who say life is sacred.

She can hold an audience spellbound.
Answer:
different meanings