coexist- to live together without any problems; to be together in the same time or space
cohesive- sticking together
coincidence- a sequence or events happening together that although accidental seems to have been planner or arranged
combine- to put two things together
commiserate- to feel sorry for someone, something, or a situation; to feel pity; to get together with someone to feel sadness
committee- a group of people who meet together to discuss a topic
communication- the act of talking with someone and discussing something together
community- a place where people live together
compare- to put things together to see how they are the same
compatible- able to live together and get along; things that can go together without problems