Really quick question portable vs non portable

Just like the title says, whats the difference between downloading and using software that is portable vs. non portable? Any advantages/disadvantages? Thanks a lot!
Answer #1
Portable = no installation required.
Answer #2
No ~love~ prozac4312, thats not what he was asking.
Answer #3
S1driver replied: No ~love~ prozac4312, thats not what he was asking.
Why?
He asked: Any advantages/disadvantages?
no installation required..Is one of the advantages..
What’s your contribution to the topic?
Answer #4
Alright guys, thank you so much! So I have to mount/burn iso’s etc for most software i.e. office?
Answer #5
There are portable versions of Office.