Disciplinarian
Part of speech: noun
Definition: One who exercises discipline. One who believes in discipline as a tool for regulation or control.
Example sentence: Here's something that's interesting if you look at basic metrics or numbers in this country - 71% of African-American men: no dad at home. No disciplinarian. Fathers are often the louder voice, the disciplinarian. Many of those kids don't grow up with a dad.
Moralist
Part of speech: noun
Definition: One who drives all their decisions based on perceived morals, especially one who enforces them with censorship.A teacher of morals.