coast noun The land next to or bordering the sea. We drove along the coast, stopping at small towns overlooking the water. + coffee noun A dark, caffeinated drink made by brewing roasted, ground coffee beans in hot water. She drinks a cup of coffee every morning before leaving for work. + cousin noun A child of one's aunt or uncle, or more broadly a relative descended from a common ancestor. My cousin flew in from Chicago to celebrate the holidays with us. + coward noun A person who lacks the courage to face danger, pain, or difficulty. He called himself a coward for staying silent while his friend was blamed. + cocoon noun A protective silky case spun by an insect larva, especially a moth, in which it develops into an adult. The caterpillar spun a cocoon on the underside of the leaf before winter. + cobweb noun A fine, sticky network of threads spun by a spider to catch insects. A thick cobweb stretched across the corner of the abandoned barn. + cottage noun A small, cozy house, especially one in the countryside or by the coast. They rented a cottage by the sea for a peaceful week away from the city. + cotton noun A soft white fiber that grows around the seeds of the cotton plant and is spun into cloth. The farmers harvested the cotton before the autumn storms could damage the crop. + coral noun A hard, often colorful substance formed by the skeletons of small marine animals, building reefs in warm seas. Divers marveled at the vivid coral covering the shallow reef near the shore. + coconut noun The large brown seed of a tropical palm, with a hard, hairy shell, white flesh, and clear liquid inside. We drank cold coconut water straight from the shell on the beach. + comet noun A celestial body of ice and dust that orbits the sun and develops a glowing tail when near it. Astronomers tracked the comet for months before it became visible to the naked eye. + comic adjective Causing laughter or amusement; intended to be funny. The comic timing of the actors made even the simplest lines feel hilarious. + compass noun An instrument with a magnetized needle that points north, used for finding direction. The hikers relied on a compass after losing sight of the trail markers. + concert noun A public musical performance given by one or more performers before an audience. We stood in line for hours to get tickets to the sold-out concert. + contest noun A competition or struggle in which people try to win a prize, title, or advantage over one another. Hundreds of bakers entered the annual contest to win the grand prize ribbon. + cooperate verb To work jointly with another person or group toward a shared goal or result. The two departments finally agreed to cooperate on the new safety project. + coordinate noun A set of numbers used to indicate an exact position on a map, graph, or grid. The pilot entered the coordinates of the airport into the navigation system. + coexist verb To exist together at the same time or in the same place, usually peacefully despite differences. The two species coexist in the same forest without competing for food. + cohesive adjective Forming a unified whole; sticking together closely, especially through shared purpose or consistent structure. The coach built a cohesive team out of players who had never met before. + coincide verb To happen at the same time as something else, or to be in exact agreement. Her birthday happens to coincide with the town's annual festival. + collaborate verb To work together with another person or group, especially to produce or achieve something. The two research teams agreed to collaborate on a joint study of the disease. + cobalt noun A hard, silvery-white metallic chemical element used in alloys and batteries, or the deep blue pigment made from its compounds. The mine exports cobalt used in the batteries of electric vehicles. + colony noun A country or territory under the political control of another, more powerful country, often with settlers from that country. India was a British colony until it gained independence in 1947. + courtesy noun Polite, respectful behavior toward other people, especially in small everyday actions. He held the door open as a simple courtesy to the elderly woman. + courage noun The ability to face fear, danger, or difficulty without being overcome by it. It took real courage for her to speak up in front of the whole board. + costume noun An outfit worn to represent a particular character, culture, era, or occasion, often for performance or celebration. She wore a homemade witch costume for the neighborhood Halloween party. +