electrical storm vs thunderstorm

electrical storm and thunderstorm both are nouns.

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

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

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

Other synonyms of electrical storm include electric storm.

electrical storm (noun)	thunderstorm (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