suffer vs grieve

suffer and grieve both are verbs.

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

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

Other hyponyms of suffer include agonise, agonize, anguish, lose, sorrow.

suffer (verb)	grieve (verb)
be in pain	feel grief
undergo (as of injuries and illnesses)	cause to feel sorrow
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