absorb vs fuse

absorb is not a noun while fuse is a noun.

Word	Noun	Adjective	Verb	Adverb
absorb	No	No	Yes	No
fuse	Yes	No	Yes	No

As verbs, fuse is a hypernym of absorb; that is, fuse is a word with a broader meaning than absorb:

Other hypernyms of absorb include blend, coalesce, combine, commingle, conflate, flux, immix, meld, merge, mix.

absorb (noun)	fuse (noun)
	any igniter that is used to initiate the burning of a propellant
	an electrical device that can interrupt the flow of electrical current when it is overloaded

absorb (verb)	fuse (verb)
cause to become one with	mix together different elements
take up mentally	make liquid or plastic by heating
consume all of one's attention or time	become plastic or fluid or liquefied from heat
devote (oneself) fully to	equip with a fuse; provide with a fuse
take in, also metaphorically
become imbued
assimilate or take in
take up, as of debts or payments
suck or take up or in