being so strongly desired that one becomes almost powerless to stop doing or using it
Coffee has a lot of caffeine, which is addictive.

to do something that causes a change in someone's situation
As a teacher, George affected the lives of many children.

to be thankful or grateful for something or someone
The famous singer appreciates all her adoring fans.

giving an advantage, having a helpful effect
The new park in the city was beneficial to the community by providing a safe place for children to play.

a chemical substance found in coffee and tea that can make a person feel more awake
Almost everyone I know drinks something with caffeine in the morning to get the day started.

a substance important for development and maintenance of human and animal health, particularly for the formation of bones and teeth
The calcium in milk is good for helping to strengthen your bones and teeth.

the movement of blood through the body
You need to eat healthy foods and exercise to have good circulation in your body.

a mental state of worry about something important, often widely shared
Two companies combined, the employees expressed concern about their future.

a wrong or misunderstood idea
It is a common misconception that the earth is closer to the sun during summer.

devote time and attention to acquiring knowledge on (an academic subject)
Fred needs to study harder if wants to get an A in the class.