BOM cards (bills of materials)
A BOM card is the recipe for something you make — what materials and/or components go into it, in what quantity, and what it costs. Find them under BOM Cards.
Finished goods & ready items
Once a BOM card is ready, Finished Goods (for product cards) and Ready Items (for component cards) is where you record what you actually made, sell it, or rework it. Both modules work the same way — the difference is just whether the card is marked as a product or an item.