Yes, these are faces, but why do they look like pillars to me? Ornamented and sculpted pillars are pretty common across civilizations and I can imagine sloping

Yes, these are faces, but why do they look like pillars to me? Ornamented and sculpted pillars are pretty common across civilizations and I can imagine sloping tent like roof set up that are held up by these pillars. How does one separate a pillar and a obelisk?