1.work 2. skin 3. sand 4. rain 5. postcard 6. traffic 7. accident 8. air 9. cloud 10. information 11. happiness 12. news 13 furniture 14. entertainment

Please help to check the above whether they are all correct, thanks & regards.

These are countable: postcard, accident, cloud. These can be countable: work, skin.

I think Ms. Sue means, "These can not be counted: work, skin."

count nouns (can be counted, one by one)
postcard
accident
cloud

All the rest are non-count nouns (not countable, one by one).

The taxidermist showed us five different skins from animals he killed.

The museum displayed 20 works of 17th- century painters.

I can certainly help you check the words you provided. Here is a list of each word along with a brief explanation:

1. Work: It refers to the activities, tasks, or job that one engages in to earn a living or contribute to society.

2. Skin: It is the outer layer of tissue covering the body of humans and animals. It protects the internal organs and regulates temperature.

3. Sand: It is a granular material made up of small fragments of rocks or shells. It is commonly found on beaches, deserts, and riverbeds.

4. Rain: It is a form of precipitation in the form of water droplets falling from the atmosphere. Rain is essential for the growth of plants and is a major component of the water cycle.

5. Postcard: It is a piece of cardboard or thick paper that is used for sending messages or greetings by mail. Postcards often have a picture or photograph on one side and an area for writing on the other.

6. Traffic: It refers to the movement of vehicles, pedestrians, and other modes of transportation on roads or highways.

7. Accident: It is an unexpected event or mishap that results in damage, injury, or loss. Accidents can occur in various contexts like traffic, workplace, or home.

8. Air: It is the invisible mixture of gases that makes up the Earth's atmosphere. It consists primarily of nitrogen, oxygen, and traces of other gases.

9. Cloud: It is a visible collection of water droplets or ice crystals suspended in the atmosphere. Clouds form when warm air rises and cools, causing the condensation of water vapor.

10. Information: It refers to knowledge or facts that are communicated or received. Information can be obtained from various sources like books, the internet, or conversations.

11. Happiness: It is a state of well-being and contentment. Happiness is subjective and can be influenced by various factors like personal experiences, relationships, and achievements.

12. News: It is the reporting of recent events or information. News can be disseminated through various mediums like newspapers, television, or online platforms.

13. Furniture: It refers to movable objects that are used to support various human activities, such as sitting, sleeping, or storing items. Examples of furniture include chairs, tables, beds, and cabinets.

14. Entertainment: It refers to activities or forms of amusement that provide enjoyment and diversion. Entertainment can include various forms like movies, music, theater, and sports.

All the words you provided are correct. I hope this helps!