scab vs strikebreaker

scab and strikebreaker both are nouns.

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

As nouns, scab and strikebreaker are synonyms defined as:

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

Other synonyms of scab include blackleg, rat.

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

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