The term 'RRR' in ethics is the short form of 

Rules

Responsibility 

Respect.

Teleology Vs Deontology:

1) Teleology is the branch of philosophy that studies the results.

On the other hand, Deontology is the branch of philosophy that studies on morality.

2) Teleology defines that has existence. On the other side, Deontology defines what is actually right and wrong.

3) Teleology focus on teaching righteous. Contrarily, Deontology focus on teaching righteousness.