The 'plastic' group
These nouns refer to solid substances, many of which are used in manufacturing and building.
alloy basalt ceramic clay enamel flooring granite hardwood laminate lava limestone metal ore plastic sandstone softwood steel stone underlay vinyl wood
He found a thin little notebook, covered in black plastic, glanced at it, and set it aside.
It is a biodegradable plastic which melts in temperatures above 50 degrees.
Over the past 40 years plastics have revolutionised the way we live.
Stainless steel is produced by combining steel with chromium.
Valves, valve guides and seats made of a harder steel were installed by Meredith Engineering at Welshpool.
A major problem in using iron and many steels is corrosion (rust).