dekad znamená v Angličtina

decade [decades]▼(period of ten years)
noun
[UK: ˈdek.eɪd] [US: deˈk.eɪd]

decadence▼(state of moral or artistic decline or deterioration)
noun
[UK: ˈdek.ə.dəns] [US: ˈdek.ə.dəns]