It’s more like a separate consideration than a part of the same spectrum, because these are just priorities that happen to contradict each other. In theory you could be both pro-choice and pro-life and try to optimize for both, making some degree of legal allowances for people to choose abortions but propagandizing against actually doing so and doing things like promoting sex education, the use of birth control, and poverty reduction that would decrease the rate of abortions. Or have a Zardoz esque ideology and be against both.

Of course most of the time pro-life seems to just be a euphemism, since people who are against the right to an abortion tend to not otherwise be concerned with things that make people more likely to want to choose abortions. They mostly just don’t want women to have an out for what they see as the rightful consequences of having sex.