| Term | Definition |
| Disease | An abnormal condition of an organism often caused by an infection, genetic mutation, or environmental stress that impairs normal functioning |
| Pathogen | Can be passed from host to host |
| Genetic | Hereditary, passed down in the genes/DNA |
| Congenital | Caused by an error or mistake. Improper development of the fetus |
| Deficiency | Caused by something missing/lacking in diet |
| Symptoms | An observable Characteristic of an disease that is different from normal function, sensation or appearance of the organism |
| Pathogen | An organism that causes an disease. Often a microorganism such as virus, bacteria, protozoa or some fungi |
| Environmental Stress | Caused by exposure to environment |
| Transmission | The way that a pathogen gets to its host animal or plant |
| Vector | An organism that carries a pathogen from one animal or plant host to another |
| Infectious example | Pink Eye and Common Cold |
| Genetic example | Hemophilia and Down Syndrome |
| Congenital example | Conjoined Twins |
| Deficiency example | Scurvy and Lactose Intolerance |
| Environmental Stress example | Asbestos, smog, cigar smoke |
| Transmission example | Airborne, Animals, Bodily Fluids, Shared Needles, Needle Sticks, Touching something contaminated |
| Vector example | Tick, Mosquito, Rabies |
| Diagnosis | A method of identifying the disease. Often utilizes observations and simple or sophisticated tests |
| Prevention | Ways to avoid getting a disease |
| Treatment | The use of drugs or procedures to reduce the symptoms or cure the disease |
| Diagnosis example | CT Scan, MRI, EKG, Ultra Sound, Blood test. etc.... |
| Prevention example | Washing hands, vaccinations, Sleep/Workout, Protected Sex, Use of Sunscreen. etc.... |
| Treatment example | Chemo, Radiation Therapy, Antibiotics, Tylenol |