We know about shipping when you pair to character together for romance but there are different kind of shipping
I know you all my life:this one means the people know ether all there life there ether best friends or not but there do start dating some time. like Kim and Ron
your my best friend:much to the same thing as I know you all my life but this could ether mean that or there just best friends most people could say there love ether other and the best friends would say no but the to best friends will one day start dating like Moze and Ned
love hate relationship:one to people hate ether but yet there love ether or there hate ether but then later turned in to love ether will there start dating like Jimmy and Cindy
forbidden love:one to people love ether but there love is forbidden like Remo and Juilet (only one I could think of)
there are other such as you my partner your my boss your my employee the reason I didn't put it cuz there basely the same thing.