What are abolitionism and anti-slavery and what is the difference between them?

Antislavery advocates believed that slavery was morally wrong, while abolitionists did not. ... Antislavery advocates wanted to confine slavery to the border states, while abolitionists. wanted an immediate end to slavery everywhere.

The abolitionists saw slavery as an abomination and an affliction on the United States, making it their goal to eradicate slave ownership. They sent petitions to Congress, ran for political office and inundated people of the South with anti-slavery literature.