S: (n) decay (an inferior state resulting from the process of decaying) "the corpse was in an advanced state of decay"; "the house had fallen into a serious state of decay and disrepair"
W: (v) deteriorate [Related to: deterioration] (grow worse) "Her condition deteriorated"; "Conditions in the slums degenerated"; "The discussion devolved into a shouting match"
S: (n) rancidity (the state of being rancid; having a rancid scent or flavor (as of old cooking oil))
S: (n) decay, radioactive decay, disintegration (the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation)
S: (n) annihilation, disintegration (total destruction) "bomb tests resulted in the annihilation of the atoll"