strikebreaker vs scab

strikebreaker and scab both are nouns.

Word	Noun	Adjective	Verb	Adverb
strikebreaker	Yes	No	No	No
scab	Yes	No	Yes	No

As nouns, strikebreaker and scab are synonyms defined as:

strikebreaker and scab: someone who works (or provides workers) during a strike

Other synonyms of strikebreaker include blackleg, rat.

strikebreaker (noun)	scab (noun)
someone who works (or provides workers) during a strike	the crustlike surface of a healing skin lesion
	someone who works (or provides workers) during a strike

strikebreaker (verb)	scab (verb)
	form a scab
	take the place of work of someone on strike