pacemaker vs good example

pacemaker and good example both are nouns.

Word	Noun	Adjective	Verb	Adverb
pacemaker	Yes	No	No	No
good example	Yes	No	No	No

As nouns, good example is a hypernym of pacemaker; that is, good example is a word with a broader meaning than pacemaker:

Other hypernyms of pacemaker include example, exemplar, model.

pacemaker (noun)	good example (noun)
a horse used to set the pace in racing	something to be imitated
an implanted electronic device that takes over the function of the natural cardiac pacemaker
a specialized bit of heart tissue that controls the heartbeat
a leading instance in its field