The dog pooped in the park.
I saw elephant dung at the zoo.
道で犬の糞を踏んでしまった。
I accidentally stepped in dog poop on the street.
It smells like manure near the cowshed.
糞 is a plain, everyday (often animal-focused) word for feces, while 大便 is the formal or medical term used for human waste in clinical contexts.
糞 simply means feces or dung in general, while 肥 specifically refers to such waste once it is used or intended as fertilizer.
defecation; bowel movement
feces and urine; excreta; human waste
feces; excrement; stool
horse dung; horse manure
human excrement; night soil
cow dung; cattle manure; cowpat
dung beetle; tumblebug
shameless flattery; brown-nosing
urine and excrement
Usually written in kana; the kanji 糞 is also used but less common in everyday writing.
Kanji spelling; may be seen in formal or technical writing.
Katakana spelling, often used in scientific or emphatic contexts.
The reading ふん is the on'yomi of the kanji 糞. The word is a straightforward Sino-Japanese term for excrement.
livestock manure; animal dung
soil with manure; composted soil
fecaloma; fecalith; coprolith
damage from animal droppings; nuisance caused by excrement
coproma; fecaloma; stercoroma · coprolite
dung fly
pig manure
coprophagia; eating feces