thunderclap vs bombshell

thunderclap and bombshell both are nouns.

Word	Noun	Adjective	Verb	Adverb
thunderclap	Yes	No	No	No
bombshell	Yes	No	No	No

As nouns, thunderclap and bombshell are synonyms defined as:

Other synonyms of thunderclap include thunderbolt.

thunderclap (noun)	bombshell (noun)
a single sharp crash of thunder	an explosive bomb or artillery shell
a shocking surprise	a shocking surprise
	an entertainer who has a sensational effect