designer or maker of machines. People whose job is to repair or maintain engines. design and build.

using thought or rational judgement. process of considering or reasoning about something. To have an idea, opinion or belief about something.

To move something in a circular motion.

To tell the appearance, sound, smell of something.

having or relating to system of government in which several states form unity but remain independent in internal affairs.

referring to signals/information represented by discrete values of quantity.

Eurasian grass which is widely grown for grazing and hay. A grass grown for hay.

Group of people and system that rule a nation.

(Of an army) permanently ready to fight. Your status or position relative to your community. To be upright; not be sitting or lying down.

application of scientific knowledge for practical purposes.

A company just starting its operations.

gladly received. used to greet someone in polite or friendly way. instance or manner of greeting someone. To greet someone who has just arrived.

action of helping or doing work for someone. Maintenance of machineries so it runs well, e.g. cars. To help or do work for someone, e.g. in a store.

manufactured article or substance.