From the Greek "pan" meaning "all" or "every":
* Panorama: A wide view, especially one seen from a height.
* Pandemic: A disease that is prevalent over a whole country or the world.
* Panoply: A complete or impressive array or collection of things.
* Panchromatic: Sensitive to all colors of light.
* Panoramic: Giving a wide view, especially one that is all-encompassing.
* Pantheon: A building containing tombs or memorials of the illustrious dead.
* Pantomime: A dramatic entertainment, especially one using mime and gesture.
* Panopticon: A circular prison with a central observation tower.
* Pantograph: A device used to enlarge or reduce a drawing.
From the Latin "panis" meaning "bread":
* Pantry: A room or cupboard where food is stored.
* Bread-pan: A container for baking bread.
Other words:
* Pan: A shallow, open container, often used for cooking.
* Panel: A flat, rectangular piece of material, especially one forming part of a wall or door.
* Pancake: A flat, thin cake made from batter.
* Panoply: An impressive array or collection of things.
* Pantomime: A dramatic entertainment, especially one using mime and gesture.
This is not an exhaustive list, but it provides a good starting point for understanding the various meanings and uses of the root word "pan."