や connects nouns in a non-exhaustive list. It is like saying “A, B, and so on.” It suggests there are other items not mentioned. Key points: • や lists examples, not a complete list • Often followed by など (etc.) • Use と for complete lists • Works only with nouns at this level For example, “パンや牛乳を買います” means “I buy bread, milk, and other things.” The listener understands that there are more items. If you want to list everything, use と instead: “パンと牛乳を買います.” や is helpful when you want to give examples without listing everything. It makes speech more natural and flexible. A common pattern is “AやBなど.” The など makes the “and so on” meaning even clearer. As a beginner, remember: と = complete list, や = examples. This simple contrast will help you choose the right particle.