Etymology is the study of the origin of words and the way in which their meanings and spellings have changed throughout history. I've always found etymology fascinating, particularly that of the words I use every day in my speaking and writing. I enjoy checking Merriam-Webster's Word of the Day, especially the Did You Know section of it. This month alone, I've learned about the origin and evolution of three different words, and it's only the seventh day of the month: svelte (June 1), moxie (June 6), and gossip (June 7).
https://www.merriam-webster.com/word-of-the-day