plosive vs suction stop

plosive and suction stop both are nouns.

Word	Noun	Adjective	Verb	Adverb
plosive	Yes	No	No	No
suction stop	Yes	No	No	No

As nouns, suction stop is a hyponym of plosive; that is, suction stop is a word with a more specific, narrower meaning than plosive:

plosive: a consonant produced by stopping the flow of air at some point and suddenly releasing it
suction stop: a stop consonant made by the suction of air into the mouth (as in Bantu)

Other hyponyms of plosive include labial stop, glottal catch, glottal plosive, glottal stop, click.

plosive (noun)	suction stop (noun)
a consonant produced by stopping the flow of air at some point and suddenly releasing it	a stop consonant made by the suction of air into the mouth (as in Bantu)