A small group of things. form cluster or clusters.

Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. To greet someone who has just arrived.

outside. without it being case that. in absence of.

relating to or making use of form of tape transport, used mainly to provide backup storage. method of relaying data over computer network as steady continuous stream. To split classes or students into ability levels.

Best or most interesting part of something. draw attention to.

To make as effective as possible.

Not of the same kind; unlike other things.

amount of work to be done by person or thing. Work you are expected to do in a specified time.

flowing naturally or supplied to building through pipes and taps. The act of moving your legs to move quickly. To move your legs faster than walking.

To put into position (often a military operation).

Used before you explain something simply, clearly.

(of data) copied from one computer system to another. To transfer data from a computer or the internet.

For a reason.

gesture, action, or sound that is used to convey information or instructions. Acts or sounds that tells someone to do or start. To make a noise or motion to tell someone to start.