blow vs lash

blow and lash both are nouns.

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

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

blow (noun)	lash (noun)
a powerful stroke with the fist or a weapon	a quick blow delivered with a whip or whiplike object
forceful exhalation through the nose or mouth	leather strip that forms the flexible part of a whip
street names for cocaine	any of the short curved hairs that grow from the edges of the eyelids
an impact (as from a collision)
an unpleasant or disappointing surprise
an unfortunate happening that hinders or impedes; something that is thwarting or frustrating
a strong current of air

blow (verb)	lash (verb)
exhale hard	strike as if by whipping
free of obstruction by blowing air through	beat severely with a whip or rod
melt, break, or become otherwise unusable	bind with a rope, chain, or cord
burst suddenly	lash or flick about sharply
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