As a solution, I have created an app where you can enter any concept or topic and receive the corresponding Font Awesome icon code. Here is an example for the word "prediction":

When I searched for "prediction" using Font Awesome's search, no icons were returned: https://fontawesome.com/search?q=prediction&o=r

However, the app suggested that I should use the "chart-line" icon, which was accurate: https://cookup.ai/o/prediction-font-awesome-icon-picker-usin...

Please try it out and let me know your feedback.