Christ Child vs El Nino

Christ Child and El Nino both are nouns.

Word	Noun	Adjective	Verb	Adverb
Christ Child	Yes	No	No	No
El Nino	Yes	No	No	No

As nouns, Christ Child and El Nino are synonyms defined as:

Christ Child (noun)	El Nino (noun)
the Christ child	the Christ child
	(oceanography) a warm ocean current that flows along the equator from the date line and south off the coast of Ecuador at Christmas time