改用

改 gǎi HSK 4 #1,422

to change / to correct

改变 gǎibiàn HSK 4 #451

to change / to transform

改行 gǎiháng #21,884

to change profession / to switch careers / to change one's trade

改革 gǎigé HSK 5 #8,692

to reform / to change (a system or practice) / reform

改过自新 gǎiguò-zìxīn #10,183

to reform and start afresh / to turn over a new leaf / to mend one's ways

改造 gǎizào HSK 6 #5,219

to transform; to renovate / to reform; to remold

改进 gǎijìn HSK 5 #5,893

to improve; to make better / improvement

改善 gǎishàn HSK 5 #6,054

to improve / to make better

更改 gēnggǎi HSK 7-9 #9,332

to change / to alter / to modify

改天 gǎitiān HSK 5 #7,202

another day; some other time