Borrowing (i.e. loanword)
The term borrowing is often used in the same sense as loanword, or perhaps more generally, for any loan element.
Subtypes
(These two terms are known especially from Myers-Scotton's work.)
Polysemy
Borrowing has at least two other meanings:
other languages
Chinese 外来词
German Entlehnung (d.h. Lehnwort)