suffer vs ail

suffer is not a noun while ail is a noun.

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

As verbs, ail is a hyponym of suffer; that is, ail is a word with a more specific, narrower meaning than suffer:

Other hyponyms of suffer include have, choke, gag, strangle, suffocate, famish, hunger, starve.

suffer (noun)	ail (noun)
	aromatic bulb used as seasoning

suffer (verb)	ail (verb)
be in pain	be ill or unwell
undergo (as of injuries and illnesses)	cause bodily suffering to and make sick or indisposed
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