Thanks to Andrew Jones for mentioning this fascinating search tool by google. It allows you to find out where terms are searched for the most around the world and over various periods of time. This would allow you to look for trends and use of terminology to see when and where it spreads based on what people in those regions google and in what years. It even gives you a nifty world map to show you search density by color.
Logos Bible study software is a platform that allows you to build a digital library of books and tools to