Minecraft wiki entry for Purpur_Block, associated text: Purpur is the word for a specific shade of purple in multiple languages, including Swedish, Polish, German and Cornish (and French pourpre to a certain extent).
Chiseled Purpur‌[Bedrock Edition only] is an unused purpur block that has the texture of the normal Purpur Block and is obtainable via /give @s purpur_block 1 1 or inventory editing.
Smooth Purpur‌[Bedrock Edition only] is an unused purpur block that has the texture of the normal Purpur Block and is obtainable via /give @s purpur_block 1 3 or inventory editing. Its in-game name is tile.purpur_block.smooth.name.