supposition or proposed explanation made on basis of limited evidence as starting point for further investigation. Theories trying to explain some things.

easily perceived or understood.

thing chosen. Rights to buy or sell at a certain price and time. buy or sell option on.

continuing or valid to final destination. expressing movement into one side and out of other side of opening etc.. By a particular way or process; by the use of.

any of more or less distinct parts into which something is or may be divided or from which it is made up. Parts of a book, newspaper, etc.. To divide something into smaller parts.

sixty seconds. Records in writing what is said at a meeting.

Be able to trust; rely on..

Act of moving with your legs at a slowish pace. move at regular pace by lifting and setting down each foot in turn.

agreement intended to be legally enforceable. To make an agreement for doing work for money.

grant property on lease.

class or division of people or things regarded as having particular shared characteristics. Groups of things that are similar in some way.

sentence worded or expressed so as to elicit information. Issues or problems you are dealing with. To have or express concerns or uncertainty.

A thing to hold up or prevent from falling down. bear all or part of weight of.

Ceremony for religious purposes. perform routine maintenance or repair work on.

small, narrow river. Small rivers. To split classes or students into ability levels.