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

A formation of planes.

The formation of sentences.

A: different meanings


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

US date: 05/24/08 = Tuesday, May 24th, 2008. UK date: 24/05/08 = Tuesday 24th May 2008.

The date of a letter, of a will, of a deed, of a coin, etc.

A: the same meaning


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

Gilbert had some bad luck yesterday -- he got pick-pocketed and lost fifty dollars.

I couldn't believe my luck when I found a fifty dollar bill on the street.

A:
the same meaning