What is the difference between AdSense and Doubleclick?

Related questions

1. Is it Google ads or Google AdWords?
2. What is DCM now called?
3. How does DoubleClick Exchange work?
4. Is Google AdWords a waste of money?
5. Does Google AdWords pay search?
6. What is DBM now called?
7. Does Adsense really pay?
8. Is Google AdWords a DSP?
9. Where is Google AdWords?
10. What is Google AdWords now called?

Tags

1. #publishers
2. #biggest
3. #money
4. #doubleclick
5. #buyer
6. #provides
7. #google
8. #internet
9. #serving
10. #products
11. #where
12. #develops
13. #adwords
14. #website
15. #advertisers
16. #subsidiary
17. #services
18. #their
19. #which
20. #adsense
21. #network