nena

nena describes parts of a surface that stick out from the parts around it. For example, a button on a computer keyboard could be a nena. A knot in a tree could be a nena. Small toes can be nena. Fingers are probably too long to be nena, but if you use nena for them, you're framing them as bumps as opposed to long objects or a grasping organ. nena can be dull or sharp. A speed bump can be a nena and a hill can be a nena, but so can a spike or a sharp peak of a mountain. Some nena are pleasant to touch, and others might draw blood. If I wanted to make a nena no longer a nena, all I'd need to do is smooth it into the rest of the surface it's part of such that it no longer bulges out.

Another important part of nena's semantic space is its usage for the nose. The nose is a bump, which is why nena can describe it, but as a transitive verb, nena becomes rapidly useful to describe active smelling. Wafting the aroma of roasting chicken can be a type of nena, as an action, but it's drawing attention to the nose. It makes the agent (i.e. the one that smells) a key part of the situation. Note that for most speakers, this usage of nena is not as core to the semantic space. You should still expect to see this usage every now and then.