metal (n)
/ˈmɛt̮l/

a type of solid mineral substance that is usually hard and shiny

plastic (n)
/ˈplæs.tɪk/

an artificial substance that can be shaped when soft into many different forms and has many different uses

cardboard (n)
/ˈkɑrdbɔrd/

stiff material like very thick paper, often used for making boxes

nylon (n)
/ˈnaɪlɑn/

a very strong artificial material, used for making clothes, rope, brushes, etc

diamond (n)
/ˈdaɪəmənd/

a clear precious stone of pure carbon, the hardest substance known

platinum (n)
/ˈplætnəm/

a silver-gray precious metal, used in making expensive jewelry and in industry

aluminium (n)
/ˌæl.jəˈmɪn.i.əm/

a light silver-coloured metal that is used for making things such as pans for cooking

steel (n)
/stiːl/

a strong metal made from a mixture of iron and carbon

tin (n)
/tɪn/

a soft silver-white metal that is often mixed with other metals

polyester (n)
/ˌpɑliˈɛstər/

a strong material made of fibers

pearl (n)
/pərl/

a small, hard, shiny, white ball that forms inside the shell of an oyster

crystal (n)
/ˈkrɪstl/

a clear mineral, such as quartz, used in making jewelry and decorative objects

pure (a)
/pjʊr/

not mixed with anything else; with nothing added

symbol (n)
/ˈsɪmbl/

a sign, number, letter, etc. that has a fixed meaning, especially in science, mathematics, and music

balloon (n)
/bəˈlun/

a small bag made of very thin rubber that becomes larger and rounder when you fill it with air

soft (a)
/sɔft/

hanging shape easily when pressed; not stiff or firm

hard (a)
/hɑːrd/

not easy to bend, cut, or break

liquid (n)
/ˈlɪkwəd/

a substance that flows freely and is not a solid or a gas

fibre (n)
/ˈfaɪbɚr/

a material is made from a mass of natural of artifacial thread

solid (a)
/ˈsɑləd/

hard or firm; not in the form of a liquid or gas