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

I'm normally a big fan of lifesaving, but in his case we can make an exception.

He took a course in lifesaving.
Answer: the same meaning
Question: "drop" used in the same way in the following two sentences?

There was a drop in pressure in the pulmonary artery.

A drop of 57 points on the Dow Jones index.
Answer: the same meaning
Question: "stuff" used in the same way in the following two sentences?

The trunk was full of stuff.

Wheat is the stuff they use to make bread.
Answer: different meanings
Question: "think" used in the same way in the following two sentences?

I think she is pretty, contrary to most people.

I think that he is her boyfriend.
Answer:
the same meaning