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clog – v. to slowly form a block in (something, such as a pipe or street) so that things cannot move through quickly or easily
diaper – n. a piece of cloth or other material that is placed between a baby's legs and fastened around the waist to hold body waste
grease – n. an oily substance
trace – n. a very small amount of something
effluent – n. liquid (such as sewage or industrial chemicals) that is released as waste
sludge – n. a soft, thick material that is produced in various industrial processes (such as in the treatment of sewage)
toilet – n. a large bowl attached to a pipe that is used for getting rid of bodily waste and then flushed with water
unfortunately – adv. used to say that something bad or unlucky has happened
