Correct.

  Pound -> Newton
  Slug[1] -> Gram

[1]: http://en.wikipedia.org/wiki/Slug_%28mass%29

I've never heard of a slug in my life.

Pound by itself usually means mass, but it's interchangeable. Pound-force is a common term. Pound-mass can disambiguate.

Yes, that is what is most common these days. Unfortunately the "slug" unit never caught on, it's way more fun to say than "pound-mass".