code of conduct vs code of behavior

code of conduct and code of behavior both are nouns.

Word	Noun	Adjective	Verb	Adverb
code of conduct	Yes	No	No	No
code of behavior	Yes	No	No	No

As nouns, code of conduct and code of behavior are synonyms defined as:

code of conduct and code of behavior: a set of conventional principles and expectations that are considered binding on any person who is a member of a particular group

code of conduct (noun)	code of behavior (noun)
a set of conventional principles and expectations that are considered binding on any person who is a member of a particular group	a set of conventional principles and expectations that are considered binding on any person who is a member of a particular group