electric storm vs violent storm

electric storm and violent storm both are nouns.

Word	Noun	Adjective	Verb	Adverb
electric storm	Yes	No	No	No
violent storm	Yes	No	No	No

As nouns, violent storm is a hypernym of electric storm; that is, violent storm is a word with a broader meaning than electric storm:

electric storm: a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning
violent storm: a violent weather condition with winds 64-72 knots (11 on the Beaufort scale) and precipitation and thunder and lightning

Other hypernyms of electric storm include storm.

electric storm (noun)	violent storm (noun)
a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning	a violent weather condition with winds 64-72 knots (11 on the Beaufort scale) and precipitation and thunder and lightning