Grasshoppers and crickets can look pretty similar at first glance, especially given their enormous hind legs, which they both use for jumping. They differ in quite a number of ways, though—which is reflected in the fact that they’re actually somewhat distant cousins.
One of the most noticeable differences by sight is that crickets have much longer antennae.
Another difference is that grasshoppers use their legs to make noise as well as to jump, while crickets use their wings to chirp.
You’re also much more likely to see a grasshopper during the day than you would a cricket, because crickets are nocturnal.
Other differences may be less obvious but are still important, such as the location of their tympanal organs (i.e., ears), which are located on the abdomen near the thorax for grasshoppers but on the forelegs for crickets.
Now that you know these differences, you’ll be able to identify which insect is which in the image. (Answer: the top one is a great green bush cricket, and the bottom one is a grasshopper known as the elegant grasshopper.)