I don't think there's a general link between the Romanian and Scandinavian languages, but there are several words in the languages that share a common origin. The word "elev" comes from French élève/élever. The word "cartof" is similar to the German/Danish "kartoffel". An older form of "kartoffel" appears to be "tartuffel". It's from Italian "tartufolo", which actually means truffle.
I didn't find an etymology map for "elev", but here's one for "cartof":
Apparently the British and the Spanish are the only ones who "pine" for "pineapples":