Cereal and Serial
Cereal means grasses or grains used for food, or a breakfast food made from grain. It can be an adjective (cereal grains) or a noun (a bowl of cereal).
Serial is an adjective meaning "consecutive." Things that are serial come in a series, one after another. Serial television and movie serials come in episodes.
Surreal, an adjective, means fantastical and incongruous, like a pig with wings or a clock face draped over a tree branch.