儀 (Kanji for politeness)

Onyomi

I will be polite and behave righteously towards that person.

礼儀(れいぎ)

Formal manners ★★☆☆☆
礼 (polite) + 儀 (politeness) = 礼儀 (Formal manners)

Manners used in formal situations: correct bowing proceedures, sonkeigo, respecting heirarchy.

お辞儀(じぎ) する

bow ★☆☆☆☆ CCW 1/2 KANA
辞 (quit) + 儀 (politeness) = 辞儀 (bow)

a serious, formal bow - the real bow, not the head-nod.

You discuss things when you SPEAK.

Righteousness is something you have inside you, but politeness is how you treat other PERSONs.

That's why righteous has no left radical ! It's an INTERNAL virtue.