Students and faculty at Jefferson in Philadelphia are using stickers to educate about the dangers of drug abuse and how to find help.

“On the outside, it's like, ‘Oh my God, Duolingo just taught Gen Z phrases,’” says Parvez, who has spent the last four years cultivating the brand’s famously unhinged TikTok presence.

They are all Gen Z. Gen Z is just one of the names given to different age groups in society, along with millennials, Gen X, Gen Alpha, and Boomers. More than just nifty wording, these terms have ...