annoyance [annoyances](that which annoys) noun [UK: ə.ˈnɔɪəns] [US: ə.ˌnɔɪəns]
chafe [chafes](injury or wear caused by friction) noun [UK: tʃeɪf] [US: ˈtʃeɪf]
irritation [irritations](the act of irritating) noun [UK: ˌɪ.rɪ.ˈteɪʃ.n̩] [US: ˌɪ.rə.ˈteɪʃ.n̩]Mary smiled, but her voice had some irritation in it. = Mary sonreía, pero su voz tenía cierto tono de irritación.