Link card is a card, when clicked, the user goes to the specified link.
Use it to refer to your articles on other resources, to your new works (wherever they are posted: Github, Dribbble or anything else), to the certificates you received, and in general, to whatever is more convenient give a link.
Note card - the type of content that is fully displayed in the feed of the site - it is suitable for short notes (like this one), videos, podcasts, slides, etc.
Since this is markdown - here you can do everything that allows you to do this format.
See below for examples of how you can use notes.
If you have any problems with the Chronoblog, or you have interesting ideas, write to the github issue: github.com/Chronoblog/gatsby-theme-chronoblog/issues
You can also contact me on Twitter: twitter.com/Ganevru