Whats the difference between a loch and lake?

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Tags

1. #cognate
2. #irish
3. #gaelic
4. #llwch
5. #straits
6. #often
7. #words
8. #called
9. #lough
10. #estuaries
11. #cornish
12. #scottish
13. #scots
14. #could
15. #firths
16. #fjords
17. #welsh
18. #lochs
19. #inlet
20. #loughs