So you are a Japanese woman who uses the English and Ameriucan sic versions of the term Period Let s take the definition from Wikipedia itself on Full Stop A full stop or period sometimes stop full point or dot is the punctuation mark commonly placed at the end of several different types of sentences in English and many other languages So saying Period Full Stop is the same as saying Period Period or typing interesting While this has been great fun I would rather talk to someone who a slight amount of sense maturity and able to speak proper English and not butcher the English Language both British and American versions and not get them confused So Good Day to you Ma am