There seem to be multiple aproaches to generating 3d objects from text prompt. What's confusing is that some of them are generating NeRFs (https://arxiv.org/pdf/2308.16512), other's are generating meshes (https://arxiv.org/abs/2404.07191). However, those tasks seem to be very different in their nature (meshes are direct 3d representation and NeRFs compress information about 3d object).
However I don't really see strong division between those tasks in literature (all will call it 3d generation). Is there something I'm missing, and are they actually very similar tasks? Or are they not comparable to each other?