Off the top of my head, "to finish" has a meaning closer to "end", whereas "to complete" has a meaning closer to "fulfil". Here's a quick comparison: "I finished my studies..." this tells me your studies simply ended. Perhaps you graduated, but it's just as possible that you gave up, quit or were kicked out of university. "I completed my studies..." this is very clear. It means that you passed your exams and graduated. If you're talking about work, use "completed" to mean you fulfilled all the required tasks.

let me share this site that clearly explains the difference between "complete" and "finish". http://www.differencebetween.com/difference-between-complete-and-vs-finish

They are normally both the same. "I must run fast to complete the race." "I must run fast to finish the race." However. you can say "My work here is complete" but you would have to say "My work here is finished". Complete also has another use. Complete can be used to show that you have the whole of something. "My stamp collection is complete" which means you have all of them. Hope I have helped.

Hahaha....That's a good one. Thank you PokeyJoe.

When you marry the right woman, you are COMPLETE. And when you marry the wrong woman, you are FINISHED. And when the right one catches you with the wrong one, you are COMPLETELY FINISHED! -Samsundar Balgobin, recent London linguistic competition ftw!