| A | B |
|---|
| relief | the taking away of or lessening of pain |
| remarkable | worthy of attention, noticeable; extraordinary, outstanding |
| risk factor | something that makes one more likely to be in danger |
| sanitation | ways to keep things clean and germ-free |
| services | assistance provided to the public, such as water, mail, or transportation |
| sewerage | for the removal of waste |
| snack | something small that can be eaten fast |
| sneeze | send air forcefully through the nose and mouth because of an irritation, cold, allergy, etc. |
| snoring | making sounds from one's nose and mouth while sleeping |
| sore | painful |
| stages | periods of time in a process |
| stare | look intensely |
| steady | continuing |
| substance | material; anything one can touch |
| supervise | to watch over the activity of others to maintain order and discipline |
| surgery | opening up the body to fix it |
| sweating | producing a salty moisture through the skin from heat, exertion, or hard work |
| swell | get larger |
| tension | a state of stress, nervousness |
| ticks | small, bloodsucking insects that attach themselves to larger animals |
| tuberculosis | a contagious lung disease |
| unfamiliar | strange; unknown |
| vaccination | the injecting of medicine into the bloodstream in order to prevent disease |
| valves | devices that open and close to stop or allow liquid or air to pass |
| viruses | any microorganisms smaller than bacteria that cause such diseases as the common cold, influenza, measles, and HIV |
| vision | ability to see; sight |
| vomit | to throw up; to expel (food, liquid from the stomach) through the mouth |
| warning | a sign of danger |
