| 专家 | zhuān jiā | expert; specialist; Classifiers: 个 | |
| 专门 | zhuān mén | specialist; specialized; customized | |
| 专业 | zhuān yè | specialty; specialized field; main field of study (at university); major; Classifiers: 门 ; professional | |
| 专项 | zhuān xiàng | special; dedicated | |
| 专利 | zhuān lì | patent; sth uniquely enjoyed (or possessed etc) by a certain group of people; monopoly |
| 1 | He decided to study law as his major. | |
| 2 | The professor has extensive expertise in his field. | |
| 3 | The students are very attentive during class. | |
| 4 | My undergraduate major was computer science. | |
| 5 | He is regarded as an expert in this field. |
