bonjour
j'aurais besoin d'aide pour une question en anglais svp

Read these sentences from the article and notice the punctuation around the worlds in bold. (j'ai mis ces mots en majuscules avec des guillemets pour vous) What are these called? Why are they used here?

...we often feel guilty and decide that we should eat less meat. Yet most of us probably won't. instead, we will say something about meat being tasty, that "EVERYONE" eats it, and that we only buy meat from "GRASS-FED" cows.

merci d'avance