millstones

"Responsibility is a heavy burden."

"The teacher was referring to the homework assignment when she said it was due tomorrow. "

"The old stone monument was made of sandstone, showing how sand and clay over time formed a rock. "

"To buy a house, John took out a mortgage. "

"The intricate making of the model airplane showcased the student's skill. "

"The sandpaper was coarse, making it rough on my skin. "

"The farmer used the millstone to grind wheat into flour. "

"The farmer planted corn in his fields every spring. "

"The farmer grained his chickens every morning before collecting their eggs. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"Children collected colorful stones from the beach to decorate their sandcastle. "

"The chef used a mortar and pestle to grind the spices into a fine powder. "