In just about every area of arts, crafts, vintage, and supplies, sellers have their own language, and it's a language that might be totally alien to their potential buyers!
In a bricks-and-mortar store, at a craft show, or when browsing a thrift shop or swap meet, buyers are usually looking for a thing - a journal, or a piece of pottery, some cool jewellery or soap, maybe a print or card. The words that describe it don't matter much because buyers can see it, feel it, smell it for themselves.
But translate the buying experience to Etsy, and would-be customers have to count on sellers' photos and text to close the sale. If the titles, descriptions and tags rely on jargon and technical terms, the casual observer may be stranded on Planet Etsy without a Universal Translator.
The red sidebar shows just some of the common-on-Etsy terms that I'd never heard until I came into EtsyOrbit.
Short message: if a Martian, your aunt, grandfather, or a random person on the street might not know what a term means, define it for them, and tell them why the technique or material you're using is better than your competition!