languish vs yen

languish is not a noun while yen is a noun.

Word	Noun	Adjective	Verb	Adverb
languish	No	No	Yes	No
yen	Yes	No	Yes	No

As verbs, languish and yen are synonyms defined as:

languish and yen: have a desire for something or someone who is not present

Other synonyms of languish include ache, pine, yearn.

languish (noun)	yen (noun)
	a yearning for something or to do something
	the basic unit of money in Japan; equal to 100 sen

languish (verb)	yen (verb)
become feeble	have a desire for something or someone who is not present
lose vigor, health, or flesh, as through grief
have a desire for something or someone who is not present