exchange goods: the wares that change hands when traders barter with one another
This is a trader's word, and it lives in one chapter of the Bible. All eight verses that use it sit inside Ezekiel 27, the long funeral song for the port city of Tyre, and every time it appears it carries the ending "your": these are Tyre's exchange goods. It is built on a Hebrew verb meaning "to exchange" or "to stand surety" for someone, so the noun is not simply "stuff for sale". It names the goods that move in a two way deal.
Ezekiel points the word in both directions at once, which is why English versions of the same verse can look so different. When Javan, Tubal and Meshech "gave your wares" in Ezekiel 27:13, some translators hear the nations paying Tyre for its goods and others hear them stocking Tyre's warehouses. The Hebrew word sits in the middle of the transaction and does not settle which side is which, and that is close to the poem's point: Tyre is the hinge where the whole world's goods change hands.
The song then turns the word against the city. The same wares that made Tyre rich, spread across the decks of the ships of Tarshish in Ezekiel 27:25, are listed among the things that sink in Ezekiel 27:27 and named again in the wreckage in Ezekiel 27:34. Ezekiel is not describing a marketplace but a ship, and the cargo that made her heavy is what drags her down.
Ezekiel's poems against Tyre stack several trade words on top of each other, and this is the one that names the swap itself: