thought /θɔːt/ /θɔːt/
idea /ɑɪˈdiː.ə/ /aɪˈdɪə/
notion /ˈnoʊʃən/ /ˈnəʊʃn/
reflection /rəˈflɛkʃən/ /rɪˈflekʃn/
thinking /ˈθɪŋkɪŋ/ /ˈθɪŋkɪŋ/