blow vs slug

blow and slug both are nouns.

Word	Noun	Adjective	Verb	Adverb
blow	Yes	No	Yes	No
slug	Yes	No	Yes	No

As nouns, slug is a hyponym of blow; that is, slug is a word with a more specific, narrower meaning than blow:

blow (noun)	slug (noun)
a powerful stroke with the fist or a weapon	(boxing) a blow with the fist
forceful exhalation through the nose or mouth	any of various terrestrial gastropods having an elongated slimy body and no external shell
street names for cocaine	a projectile that is fired from a gun
an impact (as from a collision)	a strip of type metal used for spacing
an unpleasant or disappointing surprise	an amount of an alcoholic drink (usually liquor) that is poured or gulped
an unfortunate happening that hinders or impedes; something that is thwarting or frustrating	an idle slothful person
a strong current of air	a counterfeit coin
	a unit of mass equal to the mass that accelerates at 1 foot/sec/sec when acted upon by a force of 1 pound; approximately 14.5939 kilograms

blow (verb)	slug (verb)
exhale hard	strike heavily, especially with the fist or a bat
free of obstruction by blowing air through	be idle; exist in a changeless situation
melt, break, or become otherwise unusable
burst suddenly
shape by blowing
show off
cause to be revealed and jeopardized
allow to regain its breath
deposit eggs (of insects)
be in motion due to some air or water current
cause to move by means of an air current
leave; informal or rude
cause air to go in, on, or through
spout moist air from the blowhole
play or sound a wind instrument
make a sound as if blown
sound by having air expelled through a tube
provide sexual gratification through oral stimulation
spend lavishly or wastefully on
spend thoughtlessly; throw away
make a mess of, destroy or ruin
be inadequate or objectionable
be blowing or storming