Advocator and Nullifier

Advocator noun - A person who actively supports or favors a cause.

Nullifier and advocator are semantically related. In some cases you can replace term "Nullifier" with "Advocator", this nouns are similar.

Nullifier noun - An advocate of nullification; someone who believes that a state can resist federal laws.

Advocator and nullifier are semantically related. Sometimes you can use "Advocator" instead a noun "Nullifier".