Noun, Suru verb, Intransitive verb, Noun which may take the genitive case particle 'no'senility; senile decay; infirmity (through age)

Noun, Suru verb, Intransitive verbattenuation; damping; decay

Nouninevitable decline (decay, collapse, etc.)

Nounfive signs of the impending death of a heavenly being

Nounups and downs of life; vicissitudes of fortune