.fla's are used to save work and then edit it when ever you want.
.fla's can't be shared with someone with out flash because they are not made to be viewed.
To create a .mov file you need to export the and can be viewed in iTunes .
It is used to make the animations into a type of movie file and be watched in that form.
what you cant do to the .mov is edit it because that one is made for viewing only.
To create a .html and a .swf is the same way because you publish it and it lets you view it online or using the viewing flash.
It is used to be viewed by someone that is online and or has flash
What you cant do is edit it, just view it.