挑战

挑战	tiǎo zhàn	to challenge; to take on a challenge; a challenge
挑	tiāo	to carry on a shoulder pole / to choose / to pick / to nitpick
挑	tiǎo	to raise / to dig up / to poke / to prick / to incite / to stir up
战	zhàn	to fight / fight / war / battle