poor (adjective) poverty (noun) poorly (adverb) 窮人（形容詞）貧困（名詞）很差（副詞）

I am poorer than you.我比你窮。
I write more poorly than you.我寫比你更差。
Driven by poverty, he robbed a bank.由於貧困，他搶劫銀行。

act (verb) action (noun) active (adjective)
The active actress acts so well in the action film.

decide (verb) decision (noun) decisive (adjective)
The decisive director decided to make smart decisions.

courage (noun) encourage (verb) courageously (adverb)
The director has the courage to encourage his staff to work courageously.