奔走(ほんそう)

run around; make efforts

奔放(ほんぽう)

uninhibited; free-spirited

奔流(ほんりゅう)

rushing current; torrent

東奔西走(とうほんせいそう)

run around busily

奔命(ほんめい)

being extremely busy; running oneself ragged

奔馬(ほんば)

galloping horse

奔騰(ほんとう)

soaring; surging

奔出(ほんしゅつ)

gushing out; rushing forth

奔落(

私(わたし)は資金集(しきんあつ)めに奔走(ほんそう)した。

I worked tirelessly to raise funds.

彼(かれ)は奔放(ほんぽう)な生(い)き方(かた)を選(えら)んだ。

He chose a free-spirited way of life.