fragile

"The new math homework was easily understood by the students. "

"A school of fish disturbed the water."

"Her grandmother had passed away after a long illness."

"The baby was feeling the soft fur of the teddy bear. "

"Each person is unique, both mentally and physically."

"The birds had built an amazing structure out of sticks and various discarded items."

"Depress the upper lever to start the machine."

"The architecture of this clock is very intricate."

"the result of a course of action;  the result of a mathematical operation"

"The difference is subtle, but you can hear it if you listen carefully."

"If the vase falls to the floor, it might break."

"Hooligans destroy unprovoked."