Answer:
Quotation marks.
Step-by-step explanation:
When a word is being used outside of its regular use, that means that the word is taken out of its original place and used in a different location but within the same use.
This is done with the use of quotation marks which allows a person to use the same words from the source to another text. The quotation marks will signify that the words within the quotation marks are taken from some other texts but used similarly.
Thus, quotation marks are used to show the use of a word outside of its regular application.