take measures to check quality, performance, or reliability of something.

Whether it is raining, sunny, cold etc. outside. wear away something by exposure to atmosphere.

something that is kept or meant to be kept unknown or unseen by others. Information that others do not know.

kind and pleasant. in friendly manner. Game played not in a competition.

person who takes part in mountaineering. People who climb mountains as a sport.

line separating two areas. Lines separating one country, state from another. To form the edge of (road, etc.).

To move something forcefully and quickly.

affecting or concerning most people or things. commander of army.

undergoing natural development by increasing in size and changing physically. Act of cultivating plants for food. To get bigger and more mature; make plants do this.

growing and becoming more mature or elaborate. To make a photograph from film.

Study of past events as an academic subject.

Of or relating to several countries. game between teams representing different countries.

To think or accept that something is true.

next in time. body of supporters or admirers. Next; the one after this. To be the logical result of something.

relating to nucleus of atom.