愛憎併存[aizouheison] ambivalence
兼併[kenpei] uniting
併せる[awaseru] to match (rhythm, speed, etc.)
合併症[gappeishou] complications (in an illness)
併し[shikashi] however

併し乍ら[shikashinagara] however
併せて[awasete] in all
併せ考える[awasekangaeru] to consider together
併せ用いる[awasemochiiru] to use jointly
併も[shikamo] moreover

と考えられる[tokangaerareru] one can think that ...
一考[ikkou] consideration
勘考[kankou] consider
考え[kangae] thinking
考えてみれば[kangaetemireba] if you think about it

考える[kangaeru] to consider
考え込む[kangaekomu] to ponder
考え事[kangaegoto] (deep) thinking
考え出す[kangaedasu] to think out
考え直して[kangaenaoshite] On second thoughts ...