action or business of promoting and selling products or services. To publicize products to get you to buy; advertise.

belonging to present. Movement of water in a river, or air in the sky.

The act of composing letters on paper. To invent or create a computer program. To compose letters and words on paper or a screen.

outside. without it being case that. Not with; not having.

To remain in the same place and not move away.

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

Morally right; following principles of goodness.

arrogant or presumptuous. used for purpose of argument to indicate premise on which statement can be based. To take a job or the responsibilities of another.

relating to tutor or tutor's tuition. period of tuition given by university or college tutor.

arrange to receive something regularly by paying in advance.

flowing naturally or supplied to building through pipes and taps. The act of moving your legs to move quickly. To flow in a certain direction, like a liquid.

manufactured article or substance. Items that can be bought.

Ideas of a particular group. To have an idea about something without certainty.

For a reason.

action of helping or doing work for someone. Ceremonies for religious purposes. To maintain a piece of machinery so it runs well.