Man pages matching name pwupdate in section 8:

pwupdate.8.ja	debian 10 / manpages-ja
pwupdate.8.en	debian 10 / nis
pwupdate.8.ja	debian 11 / manpages-ja
pwupdate.8.en	debian 11 / ypserv
pwupdate.8.ja	debian 12 / manpages-ja
pwupdate.8.en	debian 12 / ypserv