about metro

[cciegoing]

semantically, metropolitan area network(MAN)=metro network, right?

"metro technology" means "MAN technology" or "metro ethernet technology", or anyting else?

when we say "metro solution", does it mean "MAN solution" or "metro ethernet solution".

thanks ahead.

[cciegoing]

and when we simply say "metro", does it just mean "metropolitan" or anything else, supposing we are in a context of networking.