Humus
Definition
n. Rich, dark organic material formed by decay of vegetable matter, essential to soil's fertility
Synonyms
fertilizer, compost, leaf mold
Antonyms
artificial fertilizer, herbicide, defoiliant
Sentences
My neighbor has humus in his garden to help the plants grow.
The humus was originally a tree but fell over and was decomposed.
Humus Or Compost? The difference.