I was telling my parents that I am trying to plan a trip to Costa Rica, and my mom mistakenly called Costa Rica an island. I said it wasn't, it is just north of Panama. And then she said something about being on the strip of land between North and South America. And then I said that I thought there was a word for it, not peninsula but maybe isthmus
And it turns out isthmus, the word that I maybe learned once during junior high, is correct. So I can randomly pull isthmus out of my *** but not something that I use way more regularly, like atropine (which I blanked on earlier this summer)