Is nihilism the logical extreme of atheism?

[Neo-Scholastic]

I just can't get excited by little puzzles where the definition of words appear to pose such a fuss that we are supposed to question tangible reality. "Significance" a 25¢ word of little actual significance beyond the tasks we ourselves assign it.

Then I don't understand why some people get their panties all in a knot when I tag their positions as nihilistic. Afterall, it's such an insignificant word.