What are examples of plural nouns with no singular form?

You're asking about uncountable nouns, sometimes called mass nouns! These are nouns that refer to things we can't easily count individually. Here are some examples:

General:

* Advice

* Information

* Furniture

* Luggage

* Scenery

* News

* Progress

Specific:

* Rice

* Water

* Milk

* Sand

* Money

* Music

* Traffic

Things you can't count:

* Chaos

* Freedom

* Happiness

* Love

* Knowledge

Important Notes:

* Context is key: Even some of these words *can* be countable in specific situations (e.g., "three pieces of furniture").

* "A" is never used with uncountable nouns: You wouldn't say "a furniture," "a scenery," or "a happiness."

Let me know if you'd like more examples!