noun - someone who is interested in a particular subject and knows a lot about it
adjective - attractively lively, animated, and full of energy, especially used to describe a woman’s personality
noun - a situation or subject that is complicated and full of hidden problems or risks
noun - a person whose job is to make and serve coffee in a coffee shop
adjective - (of a person or their behaviour) obstinate and determined to have one's own way
noun - a person who goes to a funeral and feels sad because someone has died