What is rel and href?

Related questions

1. What does a canonical tag do?
2. What does the rel attribute do?
3. What is link rel alternate?
4. What is the difference between canonical form and standard form?
5. What is a 301?
6. What is the use of rel?
7. What is self referencing Hreflang?
8. What is rel canonical?
9. What is SEO friendly URL?
10. What are canonical tags in SEO?

Tags

1. #denotes
2. #linked
3. #features
4. #probably
5. #simple
6. #attribute
7. #being
8. #containing
9. #relationship
10. #example
11. #provides
12. #element
13. #stylesheet
14. #stands
15. #document
16. #inside
17. #related
18. #value