Both are used for packaging and sending items, but an envelope is flat and ideal for papers, while a box is three-dimensional and holds larger or bulkier items.

Both are months in the year.Both have 30 days. December is in winter, while June is in summer. December marks the end of the year.

Both are structures built outdoors, but a birdhouse is for birds to nest in, while a treehouse is for people to play or relax in.

Both hold items, but a backpack is large for supplies, while a wallet is small for money.

Both are small, baked snacks, but a cookie is sweet and often contains chocolate or sugar, while a cracker is savory or salty and pairs with cheese or spreads.

Both are tools for drawing or coloring, but a marker uses ink and creates bold lines, while a crayon is made of wax and creates softer, textured marks.

Both stick things, but glue is liquid and permanent, while tape is temporary.

Both are large bodies of water and have aquatic life. Oceans are saltwater; lakes are usually freshwater. Oceans are much larger than lakes.

Both are powerful storms with strong winds, but a hurricane forms over warm ocean water and lasts longer, while a tornado forms on land and is shorter but more

Both tell time and have hands/numbers, but a clock is stationary and hangs on a wall or sits on a surface, while a watch is portable and worn on the wrist.

Both are small, baked treats, but a cupcake is sweeter and often frosted, while a muffin is usually less sweet and unfrosted.

Both are vehicles for transporting people, but an airplane flies in the sky and travels long distances, while a bus drives on roads for shorter trips.

Both have handles, but a rake gathers leaves, while a broom sweeps floors.