These all mean somewhat different things. Scripture does it for us. To find the meaning of love, we look to God. What Christ did for us teaches us that love means self-giving. He gave Himself away on the cross, that we might live.
Abortion is exactly the opposite of love.
The dynamic of abortion is reversed in our society by the dynamic of love. We teach the mother how to love the child she carries, and how to sacrifice herself for that child. We furthermore sacrifice our own time, resources, and lives to defend our youngest brothers and sisters. Of course it is our business, because it is the business of love. Love says that whenever another human being is in danger or in need, we will help them, and if we cannot help them, we will at least speak up for them.