| A | B |
| SYMBIOSIS | a relationship between two different organisms that ove together and depend on each other |
| SYMMETRY | having the same shape, size, and position in both sides of a dividing line |
| SYMPATHY | feeling kindness toward someone who suffers; pity; compassion |
| SYMPOSIUM | a conference or meeting to discuss a topic |
| SYMPTOMS | the conditions that tell a doctor something is wrong |
| SYNAGOGUE | meeting place for worship and religious instruction in the Jewish faith |
| SYNDICATE | a group of business people working together |
| SYNONYM | a word that has the same meaning as another word |
| SYNTHESIS | parts put together to make a whole |
| SYNTHETIC | formed together from artificial parts; not genuine; fake |