pine vs yen

pine and yen both are nouns.

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

As verbs, pine and yen are synonyms defined as:

Other synonyms of pine include ache, languish, yearn.

pine (noun)	yen (noun)
a coniferous tree	a yearning for something or to do something
straight-grained durable and often resinous white to yellowish timber of any of numerous trees of the genus Pinus	the basic unit of money in Japan; equal to 100 sen

pine (verb)	yen (verb)
have a desire for something or someone who is not present	have a desire for something or someone who is not present