slack vs decrease

slack and decrease both are nouns.

Word	Noun	Adjective	Verb	Adverb
slack	Yes	Yes	Yes	No
decrease	Yes	No	Yes	No

As verbs, decrease is a hypernym of slack; that is, decrease is a word with a broader meaning than slack:

Other hypernyms of slack include lessen, minify.

As verbs, decrease is a hypernym of slack; that is, decrease is a word with a broader meaning than slack:

Other hypernyms of slack include lessen, minify.

As verbs, decrease is a hypernym of slack; that is, decrease is a word with a broader meaning than slack:

Other hypernyms of slack include diminish, fall, lessen.

slack (noun)	decrease (noun)
a cord or rope or cable that is hanging loosely	the act of decreasing or reducing something
the quality of being loose (not taut)	the amount by which something decreases
a stretch of water without current or movement	a change downward
a soft wet area of low-lying land that sinks underfoot	a process of becoming smaller or shorter
a noticeable deterioration in performance or quality
dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve

slack (adjective)	decrease (adjective)
not tense or taut
lacking in rigor or strictness
flowing with little speed as e.g. at the turning of the tide

slack (verb)	decrease (verb)
release tension on	decrease in size, extent, or range
make less active or fast	make become smaller
make less active or intense
become slow or slower
cause to heat and crumble by treatment with water
become less in amount or intensity
be inattentive to, or neglect
avoid responsibilities and work, be idle