ache vs pine

ache and pine both are nouns.

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

As verbs, ache and pine are synonyms defined as:

ache and pine: have a desire for something or someone who is not present

Other synonyms of ache include languish, yearn, yen.

ache (noun)	pine (noun)
a dull persistent (usually moderately intense) pain	a coniferous tree
	straight-grained durable and often resinous white to yellowish timber of any of numerous trees of the genus Pinus

ache (verb)	pine (verb)
have a desire for something or someone who is not present	have a desire for something or someone who is not present
be the source of pain
feel physical pain