the.com/trade show

means A gathering where companies in the same industry rent booths to showcase products, hand out swag, and hunt for new customers or deals.

from Straightforward compound: 'trade' (one's business or industry, from a root meaning a trodden path or course of dealing) plus 'show' (a public display, from Old English 'sceawian,' to look at). The format itself—industry-specific exhibition halls for buyers and sellers—took shape as commerce industrialized and businesses needed efficient ways to display wares to many potential clients at once, rather than any clever wordplay in the name.