Definition of "Cost" :
noun: the property of having material worth (often indicated by the amount of money something would bring if sold)
"He couldn't calculate the cost of the collection."
noun: value measured by what must be given or done or undergone to obtain something
"The cost in human life was enormous."
noun: the total spent for goods or services including money and time and labor
verb: require to lose, suffer, or sacrifice
"This mistake cost him his job."
verb: be priced at
"These shoes cost $100."