roll - v. to turn over and over; to move like a ball
room - n. a separate area within a building with its own walls
root - n. the part of a plant that is under the ground and takes nutrients from the soil
rope - n. a long, thick piece of material made from thinner pieces of material, used for tying
rough - ad. not flat or smooth; having an uneven surface; violent; not made well
round - ad. having the shape of a ball or circle
rub - v. to move something over the surface of another thing
rubber - n. a substance made from the liquid of trees with the same name, or a similar substance made from chemicals
ruin - v. to damage severely; to destroy
rule - v. to govern or control; to decide; n. a statement or an order that says how something must be done
run - v. to move quickly by steps faster than those used for walking
S
sabotage - v. to damage or destroy as an act against an organization or nation ("The rebels sabotaged the railroad.")
sacrifice - v. to do without something or to suffer a loss for a belief, idea, goal or another person
sad - ad. not happy
safe - ad. away from harm or danger
sail - v. to travel by boat or ship
sailor - n. a person involved in sailing a boat or ship
salt - n. a white substance found in sea water and in the ground, used to affect the taste of food
same - ad. not different; not changed; like another or others
sand - n. extremely small pieces of crushed rock found in large amounts in deserts and on coasts
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