n. something that happens without being planned and that is not expected
There are many car accidents in this area, so be careful when driving.

n. a substance that is given to a person to relieve pain or cure sickness
I need to bring some medicine to Kelly. She is very sick.

n. a pain in the head.
I have a terrible headache, so I need to take a rest.

n. someone who cares for sick or hurt people as a job, usually in a hospital or doctor's office
The nurse helped the doctor care for the sick patient.

n. abdominal pain
Eating too much candy gave him a stomachache.

n. an institution where people receive all different types of medical care
I think she needs to go to the hospital right now. She is injured really bad.