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

Most BASIC files use the filename extension .BAS.

The extension of 'satellite of Mars' is the set containing only Demos and Phobos.

A: different meanings

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

The resolution of one dissonance is often the preparation for another dissonance.

Preparations for the ceremony had begun.

A: different meanings

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

Is there any news about the storm?

That's news to me.

A:
the same meaning