Minecraft wiki entry for Glass_(disambiguation), associated text: Glass Pane, a thinner version of glass.
Glass Bottle, a bottle version of glass.
Tinted Glass, type of glass that block light.
Hardened Glass, a harder version of glass that only have on Bedrock Edition and Education Edition.
Hardened Glass Pane, a thinner version of hardened glass that only have on Bedrock Edition and Education Edition.
Spyglass, the item that let you zoom.
Tinted Glass, type of glass but on Java Edition 2.0 (April Fools' joke).