Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Word clouds presenting the most used words on YouTube, Twitter, and Google. (a) word cloud including the most used words in the title of YouTube posts; (b) the most used words from the posts in Twitter; (c) the most used words in Google. Each word’s frequency is correlated with font size.
