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

The power of its engine determines its operation.

A multinational operation.

A: different meanings

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

Tickets are $5 per head.

We will consider performance issues under the head of future improvements.

A: different meanings

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

Can you follow her argument?

A terrible tsunami followed the earthquake.

A:
different meanings