suffer vs sustain

suffer and sustain both are verbs.

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

As verbs, suffer and sustain are synonyms defined as:

Other synonyms of suffer include get, have.

suffer (verb)	sustain (verb)
be in pain	undergo (as of injuries and illnesses)
undergo (as of injuries and illnesses)	establish or strengthen as with new evidence or facts
feel unwell or uncomfortable	admit as valid
get worse in quality	supply with necessities and support
be set at a disadvantage	provide with nourishment
put up with something or somebody unpleasant	be the physical support of; carry the weight of
experience (emotional) pain	lengthen or extend in duration or space
feel physical pain
undergo or be subjected to
undergo or suffer
be given to