(Of times) instability and unpredictability. Violent or unsteady movement of air or liquids.

quantity having direction as well as magnitude. Math a quantity that has both size and direction. direct aircraft in flight to desired point.

place where road branches off from another. To become (a particular age).

To say something in an official or sure way.

reciprocal action or influence. Processes of people or things affecting each other.

Line of text indicating what a passage is about. To be first or at the front or top (e.g. a list).

Movement downward; movement toward something bad.

verbal written or recorded communication. Ideas or themes in a story, book, or film. To communicate using text.

in space separating things. Among two or more people who share something.

serious and unexpected situation.

Long hole dug in the ground, e.g. to move water. direct towards end or goal.

continuing or valid to final destination. From the beginning of something until the end. Over, in, across an entire thing or place.

To give permission for something to happen.

To make clear or easy to understand by describing.