Noun
disintegration [pl. disintegrations]
decomposition [pl. decompositions]
decadence {or decadency}
decompositions [sing. a decomposition]
degeneracy [pl. degeneracies]
Verb
to decay [ decayed ; decayed ]
to decompose [ decomposed ; decomposed ]
to disintegrate [ disintegrated ; disintegrated ]
to weather {geogr.}
تَفَسَّخَ {جغرافيا}
...
degradation {chem.}
تفسخ {كمياء}
fissility {geol.}
تفسخ {جيولوجيا}
sepedon {med.}