To prove or make clear by reasoning or evidence.

Explanation of word's meaning, as in dictionaries.

Group of radio or television stations, programs. To exchange information with colleagues, contacts.

Area or scene of activity, especially in politics. To make gardens that improve an area of land.

graphical representation of period of time.

Arrangement of objects so people can see or buy. To put so they can be seen or be bought.

action of inspecting or looking at something. To have a particular opinion or idea about.

device for observing or checking something. observe and check quality over time.

Purifier that removes impurities from a gas.

sea area. Method or route used for sending or getting things. To send (e.g. money) to a certain place or person.

brought together so that link is established. To associate a thing with something else.

action of person or things that taps. To hit something or someone lightly.

device for recording visual images in form of photographs. Objects that take pictures digitally, or on film.

Set of changes that occur slowly and naturally. To prepare by treating something in a certain way.

close observation.