wound vs gash

wound and gash both are nouns.

Word	Noun	Adjective	Verb	Adverb
wound	Yes	Yes	Yes	No
gash	Yes	No	Yes	No

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

wound: an injury to living tissue (especially an injury involving a cut or break in the skin)
gash: a wound made by cutting

Other hyponyms of wound include raw wound, stigmata, abrasion, excoriation, scrape, scratch, cut, slash, slice, laceration, bite.

wound (noun)	gash (noun)
the act of inflicting a wound	a strong sweeping cut made with a sharp instrument
a casualty to military personnel resulting from combat	a trench resembling a furrow that was made by erosion or excavation
a figurative injury (to your feelings or pride)	a wound made by cutting
an injury to living tissue (especially an injury involving a cut or break in the skin)

wound (adjective)	gash (adjective)
put in a coil

wound (verb)	gash (verb)
cause injuries or bodily harm to	cut open
hurt the feelings of