scab vs blackleg

scab and blackleg both are nouns.

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

As nouns, scab and blackleg are synonyms defined as:

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

Other synonyms of scab include rat, strikebreaker.

As verbs, scab and blackleg are synonyms defined as:

Other synonyms of scab include fink, rat.

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