The difference is that while the anti-abortion focuses on abortion and anti-euthanasia movement focuses on euthanasia and assisted suicide, the right-to-life movement covers all three issues.
The terms "right to life" and "pro-life" are generally associated more with opposition to abortion than to assisted suicide and euthanasia, and many right-to-life organizations primarily focus on abortion, but most organizations oppose all three.
[1][2] The consistent life ethic, held by some in the right-to-life movement, opposes not only abortion, assisted suicide, and euthanasia, but also capital punishment and war.
In the United States, the National Right to Life Committee is the largest right-to-life organization.
[3] The right-to-life movement is often associated with Christianity (especially Catholicism) and the Republican Party, but groups such as Secular Pro-Life and Democrats for Life of America hold anti-abortion and anti-euthanasia views for other reasons.