language vs magic spell

language and magic spell both are nouns.

Word	Noun	Adjective	Verb	Adverb
language	Yes	No	No	No
magic spell	Yes	No	No	No

As nouns, magic spell is a hyponym of language; that is, magic spell is a word with a more specific, narrower meaning than language:

language (noun)	magic spell (noun)
the mental faculty or power of vocal communication	a verbal formula believed to have magical force
the cognitive processes involved in producing and understanding linguistic communication
a systematic means of communicating by the use of sounds or conventional symbols
(language) communication by word of mouth
the text of a popular song or musical-comedy number
a system of words used to name things in a particular discipline