There are an ever-increasing selection of apps for your phone or website apps that will help you with vocabulary. Please let me know if you find more than these. I have no connection with the following, and th elisting is merely for your convenience.

iOS apps

Zondervan had iCodeus make an app  for Basics of Biblical Greek.

Mounce Multimedia Flashcards, by Danny Zacharias

If you aso search the App Store for "Mounce" you will many other apps with my database.

Android Apps

Mounce Multimedia Flashcards, by Danny Zacharias

Web apps

Quizzlet has many different databases available.