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 accept or receive something happily and gladly.

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 part of a period or event. 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. action or movement of runner. To move your legs faster than walking.

move troops into position for military action.

in most essential respects.

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

for reason that.

gesture, action, or sound that is used to convey information or instructions. Evidences or indications that some things will happen. To be evidence/an indication something will happen.