は.く、つ.く

吐, 口, 土

spit, vomit, belch, confess, tell (lies)

吐き気(はきけ): nausea; sickness in the stomach
吐く(つく): (1) to breathe out; to breathe (2) to tell (a lie); to use (foul language) (3) to vomit; to throw up; to spit up
吐く(はく): (1) to vomit; to throw up; to spit up (2) to emit; to send forth; to breathe out (3) to give (an opinion); to make (a comment); to express; to tell (4) to confess