I just found the following differentiation, and don't recall ever seeing the first term before. Do all you language experts use it?
Loantranslation: taking over of words from other languages without major changes in spelling, e. g. boss (Dutch), kindergarten (German)
Loanword: taking over of words from other languages by translating them literally, e. g. superman from (Germ.) Uebermensch, power politics from (Germ.) Machtpolitik, ecology from (Germ.) Oekologie

This is from
http://homepage.ruhr-uni-bochum.de/david.beal/terms.html