Correct
两回事
/ liǎnghuíshì /
Strokes
Definition
two quite different things/two unrelated matters
Example
As a Noun
two entirely different things/matters
1
Cānkǎo
参考
hé
和
piāoqiè
剽窃
shì
是
jiéránbùtóng
截然不同
de
的
liǎnghuíshì
两回事
。
Citing for reference is distinctly different from plagiarism.