BUR #11925 has been rejected.
create alias younger -> younger_version
create alias teenage -> teenage_version
create alias older -> older_version
People often use these tags for meaning a person who is young, a person who is teenage, or a person who is old. And if you don't read the wiki for these tags, then it isn't obvious that such a usage is incorrect.
I'd personally prefer a follow-up BUR that removes these aliases (so as to functionally rename these tags), but I'm starting with this so it won't get hooked up on that detail.