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

state of atmosphere as regards heat, cloudiness, etc.. To successfully deal with a difficult situation.

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. Outer parts or edge of some things. form border along or beside something.

To move something forcefully and quickly.

Widespread, normal or usual. Top ranked officer in the army.

undergoing natural development by increasing in size and changing physically. Act of cultivating plants for food. To develop and become bigger or taller over time.

Grown bigger, older and more mature. To create or think of something.

study of past events.

Of or relating to several countries. Person playing sport for their country.

To think or accept that something is true.

Next; the one after this. body of supporters or admirers. coming after or as a result. To be the logical result of something.

Concerning or involving the center of an atom.