| 5000 Vocabulary List for Visiting Scholars in the USA - Page 520 | |||
| Word | Type | Used in a Sentence | Synonym | 
| significance | noun | The significance is crucial. | implication | 
| significant | adj. | It is a significant item. | important | 
| signify | verb | It signifies that you work here. | shows | 
| silence | noun | Her silence was long and painful. | not speaking | 
| noun | There was silence in the room. | no sound | |
| verb | They silenced her with threats. | quieted | |
| silent | noun | It was a silent night. | quiet | 
| noun | Do be silent. | don't talk | |
| silicon | noun | Silicon is a very common mineral. | symbol Si | 
| silk | noun | China is a major producer of silk. | natural cloth | 
| silly | adj. | She was a silly young girl. | foolish | 
| adj. | That is a silly argument. | absurd | |
| silver | noun | The ring was made of silver. | symbol Ag |