Three cups of tea

Today in English, we were reading two pages repeatedly of a book called Three cups of tea. In here, I am going to write five words that I don't really understand, including the meaning from my research.

Words + Meaning:

1. Purity = Someone's   

2. Tarnished = When it's really cold theres moisture on windows, example, if you theres a tarnished window.

3. Vigilance = Looking for hard or dangerous things

4. Sophistication = When some one have there attitude and think complicatedly

5. Hewn = It means to chop something