I often search for the etymology of words. I used to overthink it when trying to find the right search terms but eventually realised that "[word] etymology" gives pretty much perfect results every time ('vaccine etymology' gave the answer on Google and DuckDuckGo without even needing to click any links).

Just mentioning this for other people who like looking up words. And yes it's obvious... unless you're one of those people who sometimes overthinks search terms.