What is the difference between: "there is weakness in it" and "weak"?

The Shaykh : And the expression of al-Hafiz confirms this, because what did al-Hafiz say?

The questioner : Al-Hafiz said: "He is truthful, but his memory changed when he moved to Baghdad, and he was a jurist."

The Shaykh : Likewise, the word "changed" is not "confused."

The questioner : Excuse me, my Shaykh, may Allah honor you, the first one, "there is weakness in it," means there is slight weakness in it.

The Shaykh : Yes, exactly.

The questioner : There is nothing to add to this commentary; I say "there is weakness in it," meaning there is slight weakness in it.

The Shaykh: Yes.

The questioner : Now, and "it is weak"... what does that mean?

The Shaykh : A weak hadith does not rise to the level of a good hadith for one who is described as weak.

The questioner : Excuse me, my Shaykh, his hadith does not rise to the level of good if he is described as weak.

The Shaykh : It does not rise to the level of good except with a supporting chain or a corroborating narration, unlike one who is described as "there is weakness in it," for his hadith is a candidate for being graded as good.