Decomposition , molder or putrefy ; see link to additional synonyms .
Decay is a word for dead things/rot.
rot
rot
rot
produce and decay
decay
The root word "rot" refers to the process of decay or decomposition, often associated with organic matter breaking down.
To basically fall apart. It also means to rot or desinegrate and ya
"rot" for example: Vegetables easily rot
Rot and decomposition are words for decay. Another word for tooth decay is cavity. Cavities happen as a result of the production of acid by bacterial fermentation of food debris accumulated on the tooth surface.
Rot
Rot, e.g. Dry rot has set in to the timber framework of the roof...... or, the tree is dead and has gone has rotten.