Rounded and Pointy Edges as Barrier Markers

Big words and math, I do not trust. Help me find a small words phrase for the rounded shapes on image F, G and H. A single word like "scalloped" edge , it halts my brain and redirects it to seafood. It's an edge that in symbolism, seems to mark the barrier to a higher-density-reality, whereas the pointy triangular edges are more like the fire symbol used at the bottom of a pictogram, upon entering our-reality.

I'm a novice at decoding Arabic calligraphy, but having no religous knowledge is sometimes an advantage. Look for the extended double-"u"s on image A, B, C, D and E. I chose these because they are serving as barriers, either an outer barrier, or a horizontal plane barrier of a portal. They have a rounded edge and a pointy edge. Rounded edge barriers, and alternating triangles barriers are easily found in symbolism, but I have not been collecting examples having both at the same time. Image G and H were in my collections, but I'll certainly start collecting more of them again.

People with actual knowledge of calligraphy will point out the name of Allah is at the top region of A, and the mid region of B and C. Having that name also contain the concept of portal(s) across a barrier into heaven, seems like a nice extra thing to know. And I may need to rethink about the "w" shape of omega and the bottom of the anchor-symbol and Starbucks logo.