way people or things differ. alter coat of arms.

instrument for converting sound waves into electrical energy variations which may then be amplified or recorded. Devices you speak in to record or amplify sounds.

part of phone, radio receiver, or other aural device.

with opposite sides or surfaces that are far apart.

price for goods or services. Amount of money you pay for services. demand as payment.

To consider how similar and different things are.

something twice as large as usual. Two teams of two people playing tennis. To be used for two functions at the same time.

idea or opinion produced by thinking, or occurring suddenly in mind. What you think; your opinions or ideas on.

one thousandth of metre. Units of measure, 1/1000 of a meter (symbol mm).

Used to add new (often different) information.

quality of being made up of exactly similar parts facing each other or around axis.

routine work involving written documents.

standardized part used in construction of structure. Parts or units with specific jobs or functions.

having specified appearance. To appear to be when you look at them; seem.

fixed or movable upright partition used to divide room, give shelter from draughts, heat, or light. Flat surfaces on computers or TVs showing images. conceal, protect, or shelter person or thing with screen.