This is a fairly vague question and I will try and make it more specific, but, if possible, could you list the changes that have occured in japanese writing in particular? (e.g character change, sentence structure, way of writing, etc.). I don't expect there to be a complete list, but if you have anything that you know of please put it below. I ask this because people say that some of my grandma's japanese, -particularly in letters- is seldom used anymore, but is still largely understandable; so, I am curious as to what made it seem outdated. If it helps at all, my grandmother was born in Shimane prefecture in the mid 1930's
Thank you! Morella A.