Why is it called hashtag and not pound?

Related questions

1. What is the Meritorious Service Medal awarded for?
2. How do you write an email appreciation?
3. Has anyone won 2 medals of honor?
4. Why is it called Octothorpe?
5. What is a Flag Letter of Commendation Navy?
6. Why is it called hashtag?
7. What is Arcom award?
8. Are Purple Hearts numbered?
9. What is NAM short for?
10. When did Pakistan become member of NAM?

Tags

1. #course
2. #could
3. #started
4. #because
5. #phrase
6. #confused
7. #pencil
8. #british
9. #sometimes
10. #symbol
11. #easily
12. #refer
13. #people
14. #number
15. #1980s
16. #spoken
17. #arose
18. #currency
19. #hashtag
20. #pound
21. #using
22. #britain