lawmaker vs promulgator

lawmaker and promulgator both are nouns.

Word	Noun	Adjective	Verb	Adverb
lawmaker	Yes	No	No	No
promulgator	Yes	No	No	No

As nouns, promulgator is a hyponym of lawmaker; that is, promulgator is a word with a more specific, narrower meaning than lawmaker:

lawmaker: a maker of laws; someone who gives a code of laws
promulgator: (law) one who promulgates laws (announces a law as a way of putting it into execution)

Other hyponyms of lawmaker include legislator.

lawmaker (noun)	promulgator (noun)
a maker of laws; someone who gives a code of laws	(law) one who promulgates laws (announces a law as a way of putting it into execution)