mirage [mirages](an optical phenomenon) noun [UK: ˈmɪ.rɑːʒ] [US: mə.ˈrɑːʒ]A mirage is said to be an illusion. = Se dice que un espejismo es una ilusión.
wishful thinking(illusion that what one would like is true) noun [UK: ˈwɪʃ.fəl ˈθɪŋk.ɪŋ] [US: ˈwɪʃ.fəl ˈθɪŋk.ɪŋ]