Need help explaining projects for CV

Hi. I’m trying to explain what I’ve been doing in my advanced front end projects in as technological a way as possible for my CV but am struggling. You can see my projects here.

For my Pomodoro Timer for example, so far I’ve got “A fully functioning timer that can be changed dynamically written entirely by myself in HTML, CSS and JavaScript and not using any APIs. Used Bootstrap and JQuery libraries. Complex functions and logic, making use of conditional logic, flags, advanced DOM manipulation and some concatenation.”

I feel I understand everything I’ve done up to this point but just not the terminology, maybe because I work by myself. Are there any key themes/topics/things I’ve done that I’m missing?