[Zope] please explain the difference...

[akonsu]

Hello,

i have been reading about zope and plone for a few days now, and i
have a question that i could not find an answer to.

i understand zope is a server, that is, it is a process in OS. from
what i could gather from the documentation, plone is a cms built on
top of zope. why then when i install plone for windows from an msi, it
appears that plone is also a server that runs alongside zope server
just on a different http port? in addition, why the plone
documentation keeps referring to plone as a server, and is using terms
such as "start plone" and "stop plone"? so, is it a CMS that runs on
top of zope or is it aan its own server? i am totally confused...

i hope this is the right list to post this kind of plone questions. if
not, i apologise, and i would appreciate if you could redirect me...

thanks for any clarifications in advance.