Question about Microsoft 365 Single

office 365 can be used on multiple devices (usually written in package) you can use it online on phone or tablet and laptop but for limited time usually (depending of witch version you get ) 1 year . the office 2016 are al the parts of office just for one pc tho :)

Office 365 is the subscription version, you have to pay annually the price to use it but you always have the currently newest version of the Office software. With Office 2016 I have the version 2016 for (pc) lifetime. You'll never have to pay again but it stays the version 2016 for ever.
Cheers Rapkosi