Loan
Part of speech: noun
Definition: A sum of money or other valuables or consideration which an individual, group or other legal entity borrows from another individual, group or legal entity (the latter often being a financial institution) with the condition that it be returned or repaid at a later date (sometimes with interest). The contract and array of legal and/or ethical obligations surrounding a loan. The permission to borrow any item.
Part of speech: verb
Definition: To lend. This usage is confined to the US (or perhaps parts thereof) and elsewhere is ungrammatical (loan being the noun, and lend the verb).
Borrowing
Part of speech: verb
Definition: To receive (something) from somebody temporarily, expecting to return it.
Part of speech: noun
Definition: An instance of borrowing something.A borrowed word, adopted from a foreign language; loanword.