Semantics means meaning.
Yes, I indicated that you play with words to manipulate its meaning.
Embryo is a child and is a human being as science tell us. Your problem is you don't understand science or you don't want to understand it and its implications.
embryo, newborn, toddler, child, young adult, teen, an adult, oldman - all those names indicating stages of devalopment or life of a human. Newborn as much as a teen is a human being, the same goes for other stages.
There were some doubts if an unborn child is a human being but that was before science discovered DNA and its properties. Since then anyone who claim that an unborn child is not an unique human being - an individual - is pretty much a shaman with backwoods unscientific ideas.
Legislation hasn't catched up with the reality as yet.
And most developed countries in passing legislation
I would question that devalopment if they are passing such legislation. All are doing it - is a rather lame excuse not an argument. That would't get you out of trouble would it? Officer sure I was speeding but everybody are doing it. You are right you can go .... lol!