To put any word or expression "entre guillemets" simply means you are putting them in between quotes.
For example:
Ma mere me dit, "je t'accompagne ce soir chez le coiffeur."
Le professeur de Francais nous a dit "mettez toutes les paroles dites par d'autres entre guillemets."
You can also put any titles of books, articles, etc. that would have quotes in English would have guillemets in French. I have never heard that you would put something that is not true "entre guillemets."
Colette