name vs christen

name is a noun but christen is not a noun.

Word	Noun	Adjective	Verb	Adverb
name	Yes	No	Yes	No
christen	No	No	Yes	No

As verbs, christen is a hyponym of name; that is, christen is a word with a more specific, narrower meaning than name:

Other hyponyms of name include baptise, baptize, refer, style, title, dub, nickname, rename, entitle, title, term, tag.

name (noun)	christen (noun)
by the sanction or authority of
a language unit by which a person or thing is known
a defamatory or abusive word or phrase
family based on male descent
a well-known or notable person
a person's reputation

name (verb)	christen (verb)
determine or distinguish the nature of a problem or an illness through a diagnostic analysis	administer baptism to
identify as in botany or biology, for example
give the name or identifying characteristics of; refer to by name or some other identifying characteristic property
assign a specified (usually proper) name to
make reference to
mention and identify by name
give or make a list of; name individually; give the names of
create and charge with a task or function
charge with a function; charge to be