EW vs military action

EW and military action both are nouns.

Word	Noun	Adjective	Verb	Adverb
EW	Yes	No	No	No
military action	Yes	No	No	No

As nouns, military action is a hypernym of EW; that is, military action is a word with a broader meaning than EW:

EW: military action involving the use of electromagnetic energy to determine or exploit or reduce or prevent hostile use of the electromagnetic spectrum
military action: a military engagement

Other hypernyms of EW include action.

EW (noun)	military action (noun)
military action involving the use of electromagnetic energy to determine or exploit or reduce or prevent hostile use of the electromagnetic spectrum	a military engagement