I can now see 4 photos (was it three before???). Anyway the top one is pine (which is a timber, timber = wood) and definitely looks like a torus skirting:
whereas the other, the edge profile of which is visible in photo 2 (which for some reason I couldn't view last time) is now clearly an ogee with quirk.
You can get reversible skirting with both mouldings from many places, which might be why your torus has adhesive on it (because it was placed to the back). Getting an exact match might prove difficult