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

She has a thing about him.

He has a thing about seafood.

A: the same meaning

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

We spread our sleeping bags on the dry floor of the tent.

The fire spared the forest floor.

A: different meanings

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

She must have seen him but she gave no sign of acknowledgment.

The preface contained an acknowledgment of those who had helped her.

A:
the same meaning