not natural or real, but made by people
artificial flavors and colors are very bad for the health.

serious illness that is caused when cells in the body increase in an uncontrolled way
Smoking causes lung cancer, so its better not to smoke.

the quality of mind or spirit that enables a person to face difficulty, danger, pain, etc., without fear
It took a lot of courage for the four soldiers to stand up to the enemy.

at the middle point between two places or times
We've traveled a hundred miles, but still have a hundred more to go. So, we're halfway there.

one of two parts of the body which fill and empty with air when you breathe
You cannot live without your lungs, so stop damaging them by smoking.

a race that is run for a long distance
marathons require a lot of discipline.

all the people in a country, region
The population for the city of Norfolk has increased 50% in the past 10 years.

to collect something, usually money, from people for a particular purpose
We sold cakes and cookies to raise money for our fieldtrip to the Grand Canyon.

appreciative about something
My family and I are very thankful for all the help you've given us.

a technique used for treating someone or something
The doctor offered his patient a cutting-edge treatment to alleviate the pain.