thunderstorm vs electric storm

thunderstorm and electric storm both are nouns.

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

As nouns, thunderstorm and electric storm are synonyms defined as:

thunderstorm and electric storm: a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning

Other synonyms of thunderstorm include electrical storm.

thunderstorm (noun)	electric storm (noun)
a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning	a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning