refrigerator, aircon, TV, washing machine - what are they called?
appliance
an object or machine use for a particular purpose ex. computer, printer
device
something that is friendly and not harmful to nature is called ....
environmentally-friendly
a small device example: MP3, tablet
gadget
What is the synonym of necessary or 'too important not to have' ?
indispensable
light and small enough to be easily carried or moved
portable
to improve the quality/ change to something of a better standard -------
replace
upgrade
downgrade
a tool or an instrument, often one that is quite simple and that is used outdoors
implement
This word means useful or suitable
practical
This means to completely change the way something is done
revolutionize
