obsolescence

"You must do your homework before you can watch television."

"The family is becoming more organized now that they have a new calendar. "

"The garden fell into disuse and became overgrown."

"The invention of smartphones quickly outmoded pagers. "

"The slide rule is now obsolete; calculators are used for calculations instead. "

"The factory was disused after the company moved to a new location. "

"After the storm, the family replaced the broken window with a new one. "

"My daughter used a calculator to figure out how much change she would get from the store. "

"The new desk is longer than the old one, so I have more space to work. "

"The process of baking a cake involves several steps, from mixing the ingredients to putting it in the oven. "

"Students need to buy their textbooks before the first day of class. "

"to neglect duty or business;  to neglect to pay debts"