Why this word is great
MEMENTO — [Noun] An object kept as a reminder or souvenir of a person, place, or event. From the Latin imperative mementō (“remember”), from the verb meminī (“to remember”). Unlike a souvenir, which is a lightweight, often commercial token of a place, or a monument, which is a grand, public declaration in stone, a memento is a private, intimate covenant with a lost moment. It is the sharp-cornered stone from a riverbed, carried until smooth; the ticket stub whose ink has bled into a ghost of the date; the single earring kept after its partner is lost—a quiet bulwark, worn by handling, against the relentless entropy of feeling.