Cis forComfortable
Something is comfortable if it feels nice to use. You are comfortable if you feel good and at ease while doing something. The dog in the picture is in a very comfortable chair.
Something is compact if it fits into a small space. The car in the picture is a compact car.
You can compact something when you compress it together so it takes up less space, for example you might compact the ground before you lay pavers on it.
Cis forCompetition
A competition is where two or more people try and be the best at something. The 'something' can be literally anything that can be judged on some critera of quality, like writing a story, running a race, baking a cake, or growing vegetables, like in the picture.
There is usually some kind of prize for winning a competition.
Cis forComplicated
Something is complicated if it has a large number of interconnected parts or is difficult to understand.
The person in the picture is looking at some complicated machinery.
Compost is vegetable matter, rotted down so it can be used to fertilize and improve soil. You can make your own compost from lawn clippings, newspaper, food scraps and fallen leaves. Compost is best kept slightly moist, and turned regularly to aerate it. Worms in your compost will really help the composting process along, as the worms eat the food scraps and their castings become part of the compost.
