(high) On double-click show translation for Norwegian word. Also, ability to chat hot-key for showing translation pop-up.
On click on an icon of extension show window with
2.1 (high) Manual search for a Norwegian word
2.2. (high) List of the saved word with translations
2.3. (moderate) Ability to download the list of words or
2.4 (low) Ability to convert the list of words to quiz websites, etc.
2.5 (low) Settings for the extension