One of my philosophies for Minecraft is that we should try to teach people new things if possible, such as using real mineral names or introducing words such as "podzol". However, when I created the banner patterns I picked simple names such as "left stripe", and didn't consider terminology from vexillology.

I'm not educated in vexillology, so it's not super clear to me which terms to use... so maybe reddit can help?

Stripes

Since the banners are rotated, would vertical stripes be fesses or pales?

The "small stripes" used in, for example, the Stars and Stripes, are those "small fesses" or do they have a specific name? On the Flags of the World website, the US flag is described as having "stripes".

The one called "cross" should be saltire, but what should I call the "down right diagonal" and "down left diagonal" stripes?

Symbols

Is the creeper face an emblem or a badge? What about the skull and the flower?

Halves

Do the "vertical half" and "horizontal half" have other names?

Other

I guess the "saw" pattern works (I found "saw-toothed" in the dictionary of vexillology), and the bricks and gradient patterns are probably custom enough to have specific names... but any other ideas?

Sources:

Wikipedia

Flags of the World