Fetus
Part of speech: noun
Definition: An unborn or unhatched vertebrate showing signs of the mature animal. A human embryo after the 8th week of gestation.
Example sentence: There's a difference between early and late abortions. If you have a late abortion, where the fetus might feel pain, then I think you should have a good reason. Because then you're inflicting pain. As you go through the third trimester, you need to have more serious reasons to end a pregnancy.
Foetus
Part of speech: noun
Definition: An unborn or unhatched vertebrate showing signs of the mature animal.An unborn baby after the 7th week of gestation.