| A | B |
| sympathy | the act of feeling the same emotions as another |
| synagogue | a place where Jewish worshippers meet together |
| syndicate | a body of business people working together |
| synthetic | formed of artificial parts, not genuine |
| symbiosis | the living together in close association of two different organisms |
| symmetry | having the same shape on both sides of a dividing line |
| symptom | a condition indicating a particular disease |
| symposium | a gathering together for the purpose of discussing a particular topic |
| synonym | a word having the same meaning as another word |
| photosynthesis | the coming together of light and chemicals within a plant to produce green growth |