manure
Synonym discussion
Sense: noun/1
All four words refer to materials that improve soil quality, but they differ in source and scope. 'Fertilizer' is the broadest term, covering any natural or chemical substance added to soil. 'Manure' is a type of natural fertilizer made specifically from animal waste — most often from horses, cows, or chickens. 'Compost' is also natural, but it comes from decomposed plant material and kitchen scraps rather than animal waste. 'Dung' refers to animal excrement in its raw form and is rarely used in gardening advice. For example, a farmer might say 'I spread horse manure on the field,' a gardener might say 'I added compost to the flower bed,' but you would not say 'I spread dung on the garden' in a normal conversation.
Common collocations
Etymology
The word 'manure' entered English through Middle English 'manuren', which meant 'to cultivate or work the land by hand'. This came from the Old French 'manovrer' (to work with the hands), which developed from the Latin phrase 'manu operari' — combining 'manu' (by hand) and 'operari' (to work). Over centuries, the meaning shifted from the action of working the land to the material that was worked into the land to improve it.