|Word is a fairly commonly used format, however it has gone through lots of changed in the last twenty years. I guess I would say depends in what you are doing.|
For just word processing I can't imagine that there is a lot of difference between the two. I have always used word since it became readily available , or the open office version. If are trying to do images and the like many versions of word can be annoying to mess with. Publisher might be a better choice for that kind of thing now.