I have never come across any verb that takes its first letter in capital. It generally happens in nouns. I have read many books and in our schools also, the rules of making letter capitals is quite clear and understood. I have never come across any book that defines capitalization of a verb. Nevertheless, here is the verb that is in capital!
Christianize (v) - two meanings there.
I completely understand the meaning but why the verb has taken a capital letter? Is this the special and only case?
Is there any rule for a verb to have its first letter capital?