Why this word is great
DELTIOLOGY — [Noun] The study and collection of postcards. From the Ancient Greek δελτίον (deltíon), diminutive of δέλτος (déltos, "writing tablet"), combined with the English suffix -logy ("study of"). Unlike "philately" (which fixates on the fiscal fragments of mail) or "ephemera collecting" (which casts a wide net over disposable print), deltiology is the deliberate curation of moments frozen in cardstock. It is the faded ink of a seaside greeting postmarked 1912, the garish colors of a mid-century motel advertisement, the smudged pencil of a soldier’s hasty note—each one a silent testament to the human urge to say, across time and distance, *I was here.*