protrusive vs underhung

protrusive and underhung both are adjectives.

Word	Noun	Adjective	Verb	Adverb
protrusive	No	Yes	No	No
underhung	No	Yes	No	No

protrusive (adjective)	underhung (adjective)
thrusting outward	having a lower part projecting beyond the upper
	supported from below especially resting on a track instead of suspended from above