guardian spirit vs angel

guardian spirit and angel both are nouns.

Word	Noun	Adjective	Verb	Adverb
guardian spirit	Yes	No	No	No
angel	Yes	No	No	No

As nouns, angel is a hypernym of guardian spirit; that is, angel is a word with a broader meaning than guardian spirit:

guardian spirit: an angel believed to have special affection for a particular individual
angel: spiritual being attendant upon God

guardian spirit (noun)	angel (noun)
an angel believed to have special affection for a particular individual	spiritual being attendant upon God
	someone who provides financial support for some venture
	person of exceptional holiness