At first glance, green onions, scallions, spring onions, and chives all seem almost identical.
They share a similar green appearance, a mild onion-like flavor, and often appear in the same grocery section.
However, they are not the same ingredient, and understanding their differences can noticeably improve how your food tastes and looks.

Green onions and scallions are actually the same thing. They come from young onions harvested before the bulb fully develops.
Because of this, they have a long, hollow green stalk and a thin white base with little to no bulb. Their flavor is fresh, mild, and slightly sweet compared to mature onions.
They are extremely versatile and can be used both raw and cooked. In salads, soups, stir-fries, and as toppings, they add brightness without overpowering a dish.
The white part carries more sharpness, while the green tops are softer and more delicate.
Spring onions are a slightly more mature version of the same plant. The key difference is that they develop a small, visible bulb at the base.

This gives them a stronger, sweeter onion flavor closer to regular onions but still milder overall.
They are excellent for roasting, grilling, or sautéing whole, as both the bulb and greens are edible and flavorful.
Spring onions are especially popular in Mediterranean and Asian cooking where a fuller onion taste is desired without the intensity of mature onions.

Chives are the most distinct of the group. Instead of being young onions, they are a separate herb related to onions and garlic.
They grow in thin, hollow, grass-like stems with no bulb at all. Their flavor is very mild and fresh, making them ideal as a finishing herb rather than a cooking ingredient.
They are best sprinkled raw over dishes like soups, eggs, dips, and potatoes. Garlic chives offer a slight variation with a gentle garlic note.