ache vs suffer

ache is a noun but suffer is not a noun.

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

As verbs, ache and suffer are synonyms defined as:

Other synonyms of ache include hurt.

ache (noun)	suffer (noun)
a dull persistent (usually moderately intense) pain

ache (verb)	suffer (verb)
have a desire for something or someone who is not present	be in pain
be the source of pain	undergo (as of injuries and illnesses)
feel physical pain	feel unwell or uncomfortable
	get worse in quality
	be set at a disadvantage
	put up with something or somebody unpleasant
	experience (emotional) pain
	feel physical pain
	undergo or be subjected to
	undergo or suffer
	be given to