| A | B |
| onco | tumor |
| carcinogens | chemical or foreign substances causing cancer |
| tobacco and tobacco smoke | cancer initiators |
| doubling times | rate at which cells divide |
| malignancy | rapid, or mutant, cell growth |
| cancer | general term for abnormal growth of cells |
| metastsis | spreading of cancer |
| lymph | liquid carried by lymphatics throughout body |
| lymph glands | small, round, bean-shaped structures |
| high-grade | immature, poorly differentiated, fast growing and aggressive tumor |
| low-grade | mature, well differentiated, slow growing and less aggressive tumor |
| staging | useful way to identify extent of tumor |
| TNM | Tumor, Node, Metastasis |
| biopsy | piece of tumor examined under microscope |