brandish vs wigwag

brandish is a noun but wigwag is not a noun.

Word	Noun	Adjective	Verb	Adverb
brandish	Yes	No	Yes	No
wigwag	No	No	Yes	No

As verbs, wigwag is a hyponym of brandish; that is, wigwag is a word with a more specific, narrower meaning than brandish:

brandish: move or swing back and forth
wigwag: send a signal by waving a flag or a light according to a certain code

brandish (noun)	wigwag (noun)
the act of waving

brandish (verb)	wigwag (verb)
move or swing back and forth	signal by or as if by a flag or light waved according to a code
exhibit aggressively	send a signal by waving a flag or a light according to a certain code