ROLE OF ABOLITIONISTS:
Abolitionists were people, particularly northerners, who faught in favor of abolishing (removing; stopping) slavery. Their main role was to denounce slavery and bring it to an end, which was eventually accomplished.
ROLE OF ANTI-ABOLITIONISTS:
On the contrary, anti-abolitionists played the role of encouraging slavery, and they were comprised of southerners in southern states who used slavery for labor.
DEFINITION OF AN ABOLITIONIST:
A northerner or person who is against slavery and wants to end it.
DEFINITION OF AN ANTI-ABOLITIONIST:
A southerner or person who is pro-slavery and wanted to continue it.