language vs accent mark

language and accent mark both are nouns.

Word	Noun	Adjective	Verb	Adverb
language	Yes	No	No	No
accent mark	Yes	No	No	No

language (noun)	accent mark (noun)
the mental faculty or power of vocal communication	a diacritical mark used to indicate stress or placed above a vowel to indicate a special pronunciation
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