Text animation above the fold

Hi All - I have read multiple entries here at the forum but haven’t figure out how to do a text animation on my website - I want to do something similar to PENTA

Where I can have multiple words changing all the time - for example - account, money, cash…

I have watched all tutorials about animations and have been able to do them. The trick part is how to change he word and making it non stop as long as the element is on view.

Thanks for the help and support.