module vs language

module and language both are nouns.

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

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

module (noun)	language (noun)
a self-contained component (unit or item) that is used in combination with other components	the mental faculty or power of vocal communication
computer circuit consisting of an assembly of electronic components (as of computer hardware)	the cognitive processes involved in producing and understanding linguistic communication
detachable compartment of a spacecraft	a systematic means of communicating by the use of sounds or conventional symbols
one of the inherent cognitive or perceptual powers of the mind	(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