From the top:
1. Nicely done "Fine Art".
2. Somewhat "coarse" in my aesthetic opinion. Are aesthetics in question?
3. Odd. Not really erotic - Possibly still within the bounds of "Fine Art", but arguable. Emotional response: flinch.
There is an interaction >within< the photograph. Was that incorrectly described as a "relation" between the *photograph* and the *viewer*?
4. No. Fine Art, at some level.
I think I'll avoid using the term "figurenude". It seems grossly affected, and unnecessary.