This is the 3899th most frequent Japanese word.
キリスト教徒
"キリスト教徒" means "Christian."
The word 'キリスト教徒' refers here to a person who follows Christianity, emphasizing their devotion.
彼は敬虔なキリスト教徒です。
He is a devout Christian.
'キリスト教徒' used here specifies the identity or role of a person within the Christian faith.
キリスト教徒としての生活には、日々の祈りが含まれます。
The life as a Christian includes daily prayers.
In this usage, 'キリスト教徒' stands for the collective group who identify as Christians in a demographic context.