What is the difference between fertilizer and soil amendment?

What is the difference between fertilizer and soil amendment?

Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: What is 'fertilizer'?; What is the difference between fertilizer and soil amendment?; What are the primary nutrients that plants need to grow? and more...

Fertilizers are nutrient providing, so some soil amendments will actually provide nutrients, and they are fertilizers in a sense. Other soil amendments, for example sphagnum peat moss, sand, or gravel do not add any nutrients, so those are not fertilizers.