moving from higher to lower level. To come down from a higher position suddenly.

buoyant or suspended in water or air. To sell the shares of a company publicly.

more distant in space. at, to, or by greater distance. (Used to introduce an additional point); also. help or promote.

each of four equal or corresponding parts into which something is or can be divided. To give a soldier a place to live for a short time.

fashionable. event or occurrence. To take place or occur.

of great weight.

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

unable to be seen. invisible exports and imports.

Being easily formed or shaped. Stiff but usually flexible man-made material.

oxide containing two atoms of oxygen in its molecule or empirical formula.

Used to add new (often different) information.

To make, cause, or bring into existence.

To get and keep one type of things as a hobby.

small inflated rubber bag. Thin bags of rubber filled with air, used as a toy. swell out in spherical shape.

Study of the physical world, based on facts.