speed bump vs incumbrance

speed bump and incumbrance both are nouns.

Word	Noun	Adjective	Verb	Adverb
speed bump	Yes	No	No	No
incumbrance	Yes	No	No	No

As nouns, incumbrance is a hypernym of speed bump; that is, incumbrance is a word with a broader meaning than speed bump:

speed bump: a hindrance to speeding created by a crosswise ridge in the surface of a roadway
incumbrance: any obstruction that impedes or is burdensome

Other hypernyms of speed bump include encumbrance, hinderance, hindrance, hitch, interference, preventative, preventive.

speed bump (noun)	incumbrance (noun)
a hindrance to speeding created by a crosswise ridge in the surface of a roadway	any obstruction that impedes or is burdensome
	an onerous or difficult concern
	a charge against property (as a lien or mortgage)