I am looking for a Linux (Ubuntu) software that allows me to take note of new words that I learn online.
I manually add new words, their meaning and usage. The software then displays each item in a nice format and allows me to review them in a variety of ways, e.g., randomly, or just alphabetically.
It is also good to have the ability to export the list to a file, for use in other software.
It's something like a box of vocabulary cards, but hopefully with some additional useful capabilities.