A wall is a decorative block. Like fences, they can be used to create boundaries, because players and most mobs cannot climb or jump over them. Source: Minecraft API

Stairs are blocks that allow mobs and players to change elevation without jumping. Source: Minecraft API

Slabs are half-height versions of their respective blocks. Source: Minecraft API

Blackstone is a dark-colored block that functions similar to cobblestone or cobbled deepslate. It can be found only in the Nether. Source: Minecraft API

Wool is a block obtained from sheep that can be dyed in any of the 16 different colors, which are white, orange, magenta, light blue, yellow, lime, pink, gray, light…

Terracotta is a block formed from clay, with a hardness and blast resistance comparable to stone. It comes in the 16 dye colors, but more dull and earthen. Source: Minecraft…

A glass pane is a transparent block that can be used as a more efficient alternative to glass blocks. Source: Minecraft API

Glass is a decorative and fully transparent solid block that can be dyed into stained glass, or crafted into tinted glass. Source: Minecraft API

A shulker box is a block that can store and transport items. Source: Minecraft API

Glazed terracotta is a vibrant solid block that comes in the 16 regular dye colors, obtained by smelting colored terracotta. Source: Minecraft API