action or fact of owning, maintaining, or protecting something. To stop balls going in a goal in sports.

inclined part of road or railway.

part of cinema or television film recording particular event.

moving or growing quickly. to try to score points for yourself or your team, in sports involving a ball, by kicking, hitting, or throwing the ball towards the goal. To use a camera to record a film/take a photograph.

To let or permit someone do something.

maintenance of constant difference in frequency between two or more connected circuits or components. To use marks to follow a wild animal.

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.

arithmetical value expressed by word, symbol, or figure. Particular songs or dances performed during shows. To assign a sequence within a group, series, set.

liveliness.

place or type of surroundings where something is positioned or where event takes place. Options on a device that can be changed e.g. sound.

put forward person or thing with approval as being suitable for particular purpose or role.

thing which emits something.

A copying method to study the real world.