Minecraft:Bedrock Edition Unicode characters
Copy the unicode character and paste it into Minecraft: Bedrock Edition chats, signs, titles etc.
Minecraft uses resource packs to assign characters (glyphs) to different unicode values, which is how the game allows you to type in chat and write on signs etc. Because fonts are just textures in a resource pack, it also allows the game to add "emojis" which have their own unicode values assign to them just like letters.