state of things as they actually exist, as opposed to idealistic or notional idea of them.

To think or accept that something is true.

Farthest from a center. either of two very different things.

Happening or being in the present time.

To talk or do things with each other.

action of one object striking another. Very strong influences. come into forcible contact with another object.

branch of science concerned with nature and properties of matter and energy. The study of heat, light, and energy on objects.

scientific procedure. To create and perform tests to research something.

Referring to any particular kind, type, quantity. at all. Anything or everything needed; no matter what. said as response indicating reluctance to discuss something, often implying indifference. used for emphasis instead of 'what' in questions.

In a basic and important way.

To do, be or happen for the first time; begin.

achieved or maintained by careful and deliberate effort. To focus on learning something usually at school.

programs and other operating information used by computer.

An arrangement by which a body holds funds on behalf of a client or supplies goods or services to them on credit.. consider or regard.

Based on observation or experiment.