Coniferous trees are pretty distinct from other types, mainly because they produce cones and have needle-like leaves, which is a big difference from the broad leaves you see on deciduous trees. They also tend to keep their leaves year-round, so they stay green even in winter, which is why they're often called evergreens. Another key thing is that coniferous trees have seeds that are contained within those cones, and they're usually found in cooler, more temperate climates. Overall, it's a combination of their leaf structure, seed production, and ability to thrive in certain environments that sets coniferous trees apart from other types of trees.