変 （ヘン） strange, odd, peculiar, weird, curious, eccentric, funny, suspicious, fishy, unexpected, change, incident, disturbance, disaster, accident, emergency, flat

変化 （ヘンカ） change, variation, alteration, mutation, transition, transformation, transfiguration, metamorphosis, variety, diversity, inflection, declension, conjugation, sidestepping

政変 （セイヘン） political disturbance, political change, change of government, political upheaval, overthrowing of a government, coup d'état, coup, revolution

異変 （イヘン） unusual event, strange occurrence, strange phenomenon, something abnormal, change (for the worse), accident, disaster

変わる （かわる） to change, to be transformed, to be altered, to vary, to move to, to be different, to be uncommon, to be unusual

変わり （かわり） change, alteration, difference, distinction, something wrong, abnormality, unusual event, accident, incident

変わり種 （かわりだね） something out of the ordinary, variant, variety, exception, novelty, person with an unusual character or background, unique figure, exceptional type, eccentric, oddball

変える （かえる） to change, to alter, to transform, to convert, to turn, to vary, to reform, to revise, to amend