Word program that has a search and replace option?

I have used in the past programs where you can search for words and then replace then replace every one of those words. I thought you can do it in Microsoft word but I cant find the option to do that. If it can be done in Microsoft word can someone help me find where that option is? If you cant do it in Microsoft word does anyone know a word/text program that does which will run on a windows computer. Thank you