What blocks exist in Minecraft BE that do NOT exist in JE and vice-versa?

Question

I recently learned that there are blocks that exist within minecraft-bedrock-edition that do NOT exist in minecraft-java-edition. As a result, I'm left to wonder:

• What blocks exist in minecraft-bedrock-edition that do NOT exist in minecraft-java-edition?
• What blocks exist in minecraft-java-edition that do NOT exist in minecraft-bedrock-edition?

Answer 1

According to the wiki, there are 12 blocks exclusive to minecraft-bedrock-edition and 2 exclusive to minecraft-java-edition:

Block	Version
Nether Reactor Core‌	minecraft-bedrock-edition
Stonecutter (legacy)‌	minecraft-bedrock-edition
Glow Item Frame (As a block)	minecraft-bedrock-edition
Glowing Obsidian	minecraft-bedrock-edition
Item Frame (as a block)	minecraft-bedrock-edition
Chiseled Purpur	minecraft-bedrock-edition
reserved6‌	minecraft-bedrock-edition
info_update	minecraft-bedrock-edition
info_update2	minecraft-bedrock-edition
Invisible Bedrock	minecraft-bedrock-edition
Smooth Purpur	minecraft-bedrock-edition
Smooth Stone Bricks	minecraft-bedrock-edition
-	-
Cave Air	minecraft-java-edition
Void Air‌	minecraft-java-edition

However, through the education edition features available in minecraft-bedrock-edition, an additional 49 blocks become available that are unavailable in minecraft-java-edition. These are:

• Allow and Deny
• Border
• Board, Poster, and Slate
• Colored Torch
  • Available in 4 colors: Blue, Green, Purple, Red
• Compound Creator
• Element Constructor
• Heat Block
• Lab Table
• Material Reducer
• Underwater TNT
• Underwater Torch
• Hardened Stained Glass and Pane
  • Available in 17 colors: Black, Blue, Brown, Clear, Cyan, Gray, Green, Light Blue, Light Gray, Lime, Magenta, Orange, Pink, Purple, Red, White, Yellow

_{Note: The information in the table above is accurate as of August 2^nd, 2021.}