articulator vs vocal organ

articulator and vocal organ both are nouns.

Word	Noun	Adjective	Verb	Adverb
articulator	Yes	No	No	No
vocal organ	Yes	No	No	No

As nouns, vocal organ is a hypernym of articulator; that is, vocal organ is a word with a broader meaning than articulator:

Other hypernyms of articulator include organ of speech, speech organ.

articulator (noun)	vocal organ (noun)
a movable speech organ	any of the organs involved in speech production
someone who pronounces words