However, in time more speakers can become familiar with a new foreign word or expression. The community of users of this word can grow to the point where even people who know little or nothing of the source language understand, and even use, the novel word themselves. The new word becomes conventionalized: part of the conventional ways of speaking in the borrowing language. At this point we call it a borrowing or loanword.
(It should be noted that not all foreign words do become loanwords; if they fall out of use before they become widespread, they do not reach the loanword stage.)