hagionym vs nom de guerre

hagionym and nom de guerre both are nouns.

Word	Noun	Adjective	Verb	Adverb
hagionym	Yes	No	No	No
nom de guerre	Yes	No	No	No

As nouns, nom de guerre is a hypernym of hagionym; that is, nom de guerre is a word with a broader meaning than hagionym:

hagionym: The name of a Saint taken as a proper name.
nom de guerre: a fictitious name used when the person performs a particular social role

Other hypernyms of hagionym include anonym, pseudonym.

hagionym (noun)	nom de guerre (noun)
The name of a Saint taken as a proper name.	a fictitious name used when the person performs a particular social role