If zero is a number, atheism is a religion and asexuality is a sexuality. I don't disagree with how zero is used but the english language is the debate here no

If zero is a number, atheism is a religion and asexuality is a sexuality. I don't disagree with how zero is used but the english language is the debate here not math. Zero is a legitimate concept in math, if a term describes certain things then is the concept of the lack of those things by default considered a member of those things? Sounds like a linguistic convention in part. Why not have a separate term to describe zero and infinity as part of the same set, "anumerics"?