conjuration vs magical spell

conjuration and magical spell both are nouns.

Word	Noun	Adjective	Verb	Adverb
conjuration	Yes	No	No	No
magical spell	Yes	No	No	No

As nouns, magical spell is a hypernym of conjuration; that is, magical spell is a word with a broader meaning than conjuration:

conjuration: a ritual recitation of words or sounds believed to have a magical effect
magical spell: a verbal formula believed to have magical force

Other hypernyms of conjuration include charm, magic spell, spell.

conjuration (noun)	magical spell (noun)
an illusory feat; considered magical by naive observers	a verbal formula believed to have magical force
calling up a spirit or devil
a ritual recitation of words or sounds believed to have a magical effect