thunderstorm vs electrical storm

thunderstorm and electrical storm both are nouns.

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

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

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

Other synonyms of thunderstorm include electric storm.

thunderstorm (noun)	electrical 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