orthoepy vs language

orthoepy and language both are nouns.

Word	Noun	Adjective	Verb	Adverb
orthoepy	Yes	No	No	No
language	Yes	No	No	No

As nouns, language is a hypernym of orthoepy; that is, language is a word with a broader meaning than orthoepy:

orthoepy (noun)	language (noun)
a term formerly used for the part of phonology that dealt with the `correct' pronunciation of words and its relation to `correct' orthography	the mental faculty or power of vocal communication
the way a word or a language is customarily spoken	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