What is keyword difficulty in SEO?

Related questions

1. What is chip short for?
2. Are long tail keywords better?
3. What is keyword difficulty?
4. What is impulse and step response?
5. How do you find long tail keywords?
6. What's a good keyword density?
7. What is the basic difference between LSI and VLSI?
8. What is medium scale integration?
9. What is semantic SEO search?
10. Does Google use semantic search?

Tags

1. #refers
2. #query
3. #world
4. #competition
5. #metric
6. #helps
7. #keyword
8. #would
9. #organic
10. #applies
11. #which
12. #understand
13. #difficulty
14. #handy
15. #particular
16. #while
17. #search
18. #results