Waste is anything that is thrown away because it is no longer of use.
When plastic was first invented, it was hailed for all the usefulness that it had and still has. It has a serious drawback of being very hard to decay however as it takes hundreds of years to do so thereby worsening the waste management problem that the planet is experiencing.
Landfills are where the government dumps the garbage it collects. They recycle some of this waste and destroy most.
Compost refers to organic material that is used as plant fertilizer. They contain nutrients that the plants can use to grow.
