dictum vs directive

dictum and directive both are nouns.

Word	Noun	Adjective	Verb	Adverb
dictum	Yes	No	No	No
directive	Yes	Yes	No	No

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

dictum (noun)	directive (noun)
an authoritative declaration	a pronouncement encouraging or banning some activity
an opinion voiced by a judge on a point of law not directly bearing on the case in question and therefore not binding

dictum (adjective)	directive (adjective)
	showing the way by conducting or leading; imposing direction on