User blog comment:B214/Question and Answers 6/@comment-208.168.245.162-20180829143431/@comment-28884330-20180829210559

“Demon Swords” are “Maken”. The kanji for “Ma” can mean either demon or magic. The same character is used for both either individually or also commonly as a composite with another character/s, such as in “Devil/Akuma”, which has the kanji “Aku”, meaning “Evil”, before the “Ma”.

“Holy Swords” are “Seiken”, and the kanji “Sei” means sacred or holy, such as in the Japanese term for the Bible “Seisho”, which means “Sacred/Holy Scripture”. It’s not a term exclusive to Christianity, though.