A ‣ Objects and materials 
Objects: things you can see or touch
Materials: what something is made of or from

object | material | description |
1 a bell | metal | used in hotel receptions |
2 a chair | wood | an antique [an object that is old and often rare or beautiful] |
3 a hat | fur | made from a real animal |
4 a bone | rubber | a toy for dogs |
5 a flag | cloth, e.g. cotton | the Italian national flag |
6 a shirt | cotton | it has red stripes |
7 a top | silk | beautifully soft and stylish |
8 a sofa | leather | stylish [fashionable and attractive] |
9 a ladder | metal | light and easy to carry |
10 a tissue | paper | a soft piece of paper that you use for cleaning your nose |
11 a bucket | plastic | used to clean floors |
Language help
Most of the materials above can be adjectives or nouns, e.g. a cotton shirt, or a shirt made of cotton; a leather sofa, or a sofa made of leather. The exception is wood: a chair made of wood is a wooden chair.
B ‣ Shapes and colours 

Language help
When we want to say that a shape is ‘almost round’ or a colour is ‘a sort of green’, we can also express this idea with the suffix -ish, e.g. She had a roundish face; He wore a greenish tie.