1. Information: "Information" is an uncountable noun, meaning it doesn't have a plural form. You wouldn't say "informations," you would use "pieces of information" or "bits of information."
2. Advice: Similar to "information," "advice" is uncountable. You wouldn't say "advices," but rather "pieces of advice."
3. Furniture: This word refers to a collective category of items, and therefore doesn't take a plural. You wouldn't say "furnitures," but rather "pieces of furniture."
4. Scenery: Like "furniture," "scenery" is a collective noun describing a general scene or landscape.
5. Chaos: Chaos is a singular concept and doesn't have a plural form.
It's important to note that some words might have a plural form in specific contexts, but in general use, they are considered unpluralisable.