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

He placed a phone call to London.

I received several calls today.

OPTIONS:
- different meanings
- the same meaning
Answer: the same meaning
Question: "population" used in the same way in the following two sentences?

The population of New Jersey will not stand for this!

The African-American population of Salt Lake City has been increasing.

OPTIONS:
- different meanings
- the same meaning
Answer: different meanings
Question: "keep" used in the same way in the following two sentences?

I can not keep track of all my employees.

I keep my specimens under glass to protect them.

OPTIONS:
- different meanings
- the same meaning
Answer: different meanings
Question: "air" used in the same way in the following two sentences?

Air out the smoke-filled rooms.

Air the old winter clothes.

OPTIONS:
- different meanings
- the same meaning
Answer:
the same meaning