1. What do they have in common?
Shopping mall
Tax rates
Skyscraper
Real estate

2. Compound Nouns
A compound noun is a noun that is made up of two or more words. Most compound nouns in English are formed by nouns modified by other nouns or adjectives.

3. The words tooth and paste are each nouns in their own right, but if you join them together they form a new word -toothpaste.

4. The word black is an adjective and board is a noun, but if you join them together they form a new word - blackboard.

5. Sometimes they are joined using a hyphen. Example: check-in

6. Sometimes they appear
as two separate words.  Example: full moon

8. SUNGLASSES

10. ICE CREAM

12. HEADLIGHT

14. CORKSCREW

16. FIREFIGHTER

18. AIRPORT

20. ARMCHAIR

22. KEYBOARD

24. HONEYMOON

25. some

26. HANDSOME

27. HANDCUFFS

28. SCREWDRIVER

29. NAIL POLISH

30. NAIL FILE

31. Cheese Grater
Dust pan and brush
Laundry detergent
Knitting needles

32. sponge
Can opener
hinge
tweezers

33. lightbulb
Measure tape
Rubber band
Blu-tak

34. Padlock
Remote control
Oven mitts
Fly swatter

35. Chopsticks
Dental floss
Thumb tacks
Wrapping paper

36. Handwriting handprint footprint fingerprints airport airconditioning airball waterfall waterproof

37. The End