I think they have different meanings. I recommend you double check their translations.

In some situations, there is very little difference in meaning. "You can easily find an Italian restaurant in any major city in Europe." "You can readily find an Italian restaurant in any major city in Europe." These two sentences have the same meaning. However, "readily," also has another meaning. It can mean that somebody is very willing to do something: "He will readily help you." = "He will be very happy to help you."

These are the adverb forms of "easy" and "ready". You can check the dictionary for each word.