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

The announcement of the verdict brought a violent reaction.

You were in the courtroom. What is your reaction?

A: the same meaning

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

Open a window and let in some air.

As he waited he could feel the air on his neck.

A: different meanings

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

Running at full stretch.

By no stretch of the imagination.

A:
the same meaning