People use ...

A ladder is a kind of portable staircase. Some ladders fold up, others like the one in the picture are very long and you lean them against a wall.

A lawnmower is a tool for cutting the grass in your lawn. Lawnmowers come in several different types.
Lawnmowers can be ride-on like a small car, and you drive them around over your lawn. This kind is good for really, really big lawns.
Then there are push-mowers that don't have an engine and rely on you pushing them to spin a blade that cuts the grass. This kind are hard to use and are not very common anymore.
The most common is the kind in the picture, where you push it to make it go where you want, but the blade is powered by a petrol or electric motor.

A machete is a kind of large knife that is used in tropical areas to cut through jungle or to harvest sugarcane. It is also used as a tool for cutting up food, or for carving wood.
Because machetes are so common in tropical regions they are also used as a weapon.

A match is a small stick with chemicals at one end that catch fire if they are rubbed along a rough surface. Matches are usually sold in a matchbox or matchbook that has a rough edge on one side to strike your matches on.
Matches are used to light fires, candles and smoking devices like cigarettes.
Match can also mean things that are similar in some way.

A monorail is similar to a train in that it travels along a fixed track. The main difference is a monorail has only one track, not two like regular trains. Some kinds of monorail hover above their track (also called a rail or beam). These are called maglev monorails.
Many monorails travel on raised tracks above a city. Not all monorails are raised like this. The beams a monorail travels on are large and solid and are often cast out of concrete, like the raised platform itself.

A mortar and pestle are used together for grinding things down or mashing them into a paste. They are most often used for crushing or grinding herbs for cooking. The bowl-shaped part is the mortar, and the stick you use for grinding things is the pestle. Most mortar and pestles are made of stone, clay or heavy wood.

Nails are small pieces of metal with one sharp end and one end that is flat. You use nails to stick things to other things, like nailing a piece of wood to another piece of wood. You use a hammer to hit the flat end of the nails with to push them through something.

A paddle steamer, or paddle wheeler, is a type of boat that is driven forward by a large wheel. Usually the wheel is at the back of the paddle steamer (stern-wheeler), but there can also be a wheel on either side (side-wheeler).
Paddle steamers are usually found on still, calm water like rivers. The paddle wheel can be driven by either a steam engine or a more modern electric or diesel engine.

A plane is a tool for shaving off thin layers of wood, to make something flatter or thinner. Planes are often used to make a sticky door fit better. Planes have handles on them placed so you can get the best force, and the wood itself is shaved off with an adjustable blade under the plane. Planes work best going with the grain of the wood, not across it.
As with many hand tools, you can also buy electric planes that don't require as much force to get them to work.

A pram is a small vehicle you put a baby inside and push them along. Prams usually have a hood on top to keep off the sun and rain.