发生 vs 发现

发生 = happen — events do it themselves (这种事发生了); 发现 = discover — you notice what was already there (发现读这本书很难).

发生發生

fāshēng ㄈㄚㄕㄥ

to happen; to occur; to take place; to arise (e.g. 發生問題|发生问题 "a problem arises")

不要再让这种事发生了！

Don't let that happen again!

发现發現

fāxiàn ㄈㄚㄒㄧㄢˋ

to notice; to become aware of; to discover; to find; to detect; a discovery

我发现读这本书很难。

I found it difficult to read the book.

In LinZi, pulling up a comparison is one tap inside a review, no context switch, no lost queue position.