When it comes to debates regarding abortion, there often seems to be a disagreement on what term to use when referring to the unborn.
Pro-choicers tend to call it a "fetus" and pro-lifers often use the term "baby" or "child". And I've seen arguments flowing both ways of accusing the other of intentionally using the term which will help their viewpoint instead of using the most objectively correct term.
And I think a pretty simple way to determine whether one is accurately using the term in regards to the debate is to look how they use the term outside of the abortion debate.
So let's say someone is throwing a party and one of the guests says "I'm brining my baby along". What is clearly being communicated in this instance is that the person is bringing an infant, not a fetus. If the guest was pregnant and brining the fetus that resides in her womb with her, she would not say she is bringing her baby along and if she did say that, the host would be expecting her to bring along an infant as opposed to just being pregnant.
So it seems pretty clear that the pro-lifers are altering the definition of the word "baby' when the use the term to communicate a fetus in the abortion debate and therefore are not using the term for accurate communication but to equivocate the fetus and a born child.