blackleg vs strikebreaker

blackleg and strikebreaker both are nouns.

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

As nouns, blackleg and strikebreaker are synonyms defined as:

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

Other synonyms of blackleg include rat, scab.

blackleg (noun)	strikebreaker (noun)
someone who works (or provides workers) during a strike	someone who works (or provides workers) during a strike

blackleg (verb)	strikebreaker (verb)
take the place of work of someone on strike