coddle          treat with care and tenderness

　　coerce          compel， to force to make obedient

　　cogent          strong， convincing

　　cogitate        think deeply， mediate

　　cognition       knowing， awareness （emotionless）

　　colander        bowl-shaped vessel with many holes used to drain off water

　　collusion       secret agreement for a deceitful purpose

　　combustion      process of burning

　　commend         praise

　　commendable     worthy of praise

　　commuter        person who travels regularly

　　complacently    with self-satisfaction

　　complaisance    easy-going habit of mind

　　comply          act in accordance

　　compound        mix or combine

　　conceal         hide， keep secret

　　conceit         over-high opinion of， too much pride

　　conciliatory    intending to or likely to， peaceful

　　concord         agreement or harmony