prejudice [prejudices](adverse judgement formed beforehand) noun [UK: ˈpre.dʒʊ.dɪs] [US: ˈpre.dʒə.dəs]
superstition [superstitions](a belief that events may be influenced by one's behaviour in some magical or mystical way) noun [UK: ˌsuː.pə.ˈstɪʃ.n̩] [US: ˌsuː.pər.ˈstɪʃ.n̩]