continuing or valid to final destination. expressing movement into one side and out of other side of opening etc.. Allowing you to pass between, or to.

information about reactions to product, person's performance, etc..

planned or conceived in detail for specific purpose. To plan in a particular way to fulfill a purpose.

In particular.

assembled or made from whatever is available, and so unlikely to be of highest quality. mark or wound made by scratching. To rub your skin with your nails to stop an itch.

Concerning one particular thing or kind of thing. medicine or remedy effective in treating particular disease.

Concerning; about. To think about a person, thing in a particular way.

group of people with common characteristic. Groups of people who share common ideas or areas.

unable to concentrate because one is preoccupied by something worrying or unpleasant. To draw someone's attention away from something.

With your attention, concentration on one thing. To keep your attention, concentration on one thing.

person who is studying at university or other place of higher education. People studying at school.

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

having capacity to develop. latent qualities that may be developed.

arrangement of and relations between parts or elements of something complex. The ways some things are built, arranged or organized. construct or arrange according to plan.

To eat, drink, buy or use up something.