包 Bāo means 'bag; to wrap'

抱 Bào is 'hold (someone)'

跑 Pǎo is 'run'

泡 Pào is 'bubble'

炮 Pào is 'cannon, firecracker'

Common words including these characters are:

包子 bāozi 'steamed stuffed bun'

抱歉　bàoqiàn　'sorry'
慢跑 mànpǎo 'jogging'
灯泡 dēngpào 'light bulb'
鞭炮 biānpào 'firecracker'