Yes. It is a proper noun.
1
First part , Generic name .
Yes. It is a noun, therefore should be capitalized.
It is capitalized only when used as a proper noun grammatically.
"Christianity" has never been a language. It has always been a religion.
Metacomet is an Indian chief who hated Christianity. He would always turn down offers to convert to Christianity. PEACE!!!!!!!!!!!!!!!!!!!!!!!!!!!
A Mere Christianity, by CS Lewis. Imitation Of Christ, by Thomas A. Kempis.
They always keep their faith going and strong
A large variaty; but Christianity is popular and always has been in Britain.
It has always been the Church from the beginning.
No. Zoroastrianism arose from a Philosopher's beliefs, Whereas Christianity has always been around and is belief in an eternal God who created everything.
As a title of a school course, yes. As a word in a sentence such as, "The drug affected his brain chemistry," no.