Here are some words and expressions that appear in the video:
footnotes (noun): a note placed at the bottom of a page in an essay
– I have to add several footnotes to my essay to provide additional context to the topic
entertaining (adjective): enjoyable, amusing
– The play was very entertaining, and I couldn’t stop laughing.
fascinating (adjective): extremely interesting
– The teacher gives fascinating lectures, and I never fall asleep in her class.
heavy-duty (adjective): strong, not easily damaged, serious
– You might need a heavy-duty backpack to carry around your books and computer on campus.
– He is a real heavy-duty thinker, and we always get into deep conversations.