The thrift store I worked at had some confusing... For instance, we had cardigans and sweaters as separate sections (for women), which was fairly straight forward, but we also had short sleeve knits, short sleeve blouses, sleeveless tops, and a tank-top plus tee shirt section. Then we'd do a sale on "short sleeve tops" that included all of those (except sleeveless tops, but including tank tops because they were tagged the same way as tee shirts) but not short sleeve active wear.
It's frustrating when a customer gets mad because they thought the sale on women's jeans applied to men's dress pants, but holy crap can this stuff be confusing.
Plus, as a guy, I'd never had any reason to know what a blouse was other than "pretty much a shirt," or the difference between a Cardigan or a sweater, or between a dress and a skirt...
Having had someone explain things to me (after one of the managers found me putting tops with no sleeves in the section labeled "sleeveless tops," she and another manager had an impromptu training session that pulled in a few other employees.