Crossword based on explanatory dictionary

Complete the crossword, then click on "Check" to check your answers. If you are stuck, you can help yourself with pictures under the crossword.
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6            7        
                
8       9       10        
                
     11             
   12               
                
   13               
                
    14    15            
                
    16              
                
  17    18              
                
                
      19            
    20              
                
  21                

Across:

1. A place to live, work, stay, etc. in accommodation.jpg
4. The way you deal with or behave towards someone or something
5. A very large ball of burning gas in space that is usually seen from the earth as a point of light in the sky at night star.jpg
6. The metal tracks on which trains run railway.jpg
8. Often used as a Christmas decoration, and it is traditional to kiss someone under it mistletoe.jpg
10. A small square piece of cloth or paper, used while you are eating to protect your clothes or to clean your mouth or fingers napkin.jpg
11. A hollow structure that allows the smoke from a fire inside a building to escape to the air outside chimney.jpg
13. A person whose job is treating people's teeth dentist.jpg
14. A plant with large, green leaves, eaten uncooked in salads lettuce.jpg
16. A person whose job is to care for people who are ill or injured, especially in a hospital nurse.jpg
17. A group of people who are related to each other, such as a mother, a father, and their children simpsons.jpg
20. An electronic book ebook.jpg
21. A close, usually short relationship of love between two people

Down:

2. A ceremony at which a person is made king or queen coronation.jpg
3. Made of or from oats oat.jpg
7. The spicy root of a tropical plant that is used in cooking or preserved in sugar, or a powder made from this root, used as a spice ginger.jpg
9. The act of giving something to someone and them giving you something else
12. Mentally ill, or unable to behave in a reasonable way
15. An animal which lives in or near water and has a thick shell covering its body into which it can move its head and legs for protection turtle.jpg
18. A small mammal with short fur, a pointed face, and a long tail mouse.jpg
19. A small, round piece of metal, usually silver or copper coloured, that is used as money coin.jpg