to use or to let someone use something, such as a room or a car, for a period of time in return for payment
a situation in which people are fully attentive and aware and watching for danger and are ready to deal with it
an object that is launched, shot, or thrown as a weapon to a target far away
change that is made to a social system, an organization, etc. in order to improve or correct it
a situation that exists now because of events, actions, etc. that took place in the past
always happening as a result of a particular action or situation
the chemical structure and behavior of a particular substance
an unexpected feature or change in a situation or series of events
one or more official meetings of government leaders for planning or discussing important matters
controlled by a computer so that it appears to act in an intelligent way
to move to a lower level, place, position, etc. or decrease in amount, volume, strength, etc.
to become less unpleasant, painful, difficult, or severe; to make something less unpleasant, etc.
the inside or inner part or area of something
to make a piece of clothing out of wool using two long needles
a thin pointed piece of metal that is pushed and rotated in order to fasten things together