Did I use these 3 words right?

<p>Tirade:
Mrs.Bloomshed’s tirade on Jenny Chou seemed too harsh. ( I think I’m missing things, could you please help me elaborate this sentence more?)</p>

<p>Ephemeral:
Commonly used words like the “Dud” is ephemeral.</p>

<p>Torpor:
Right now, I cannot seem to get out of this mental torpor that’s preventing me from memorizing words.</p>