pacesetter vs exemplar

pacesetter and exemplar both are nouns.

Word	Noun	Adjective	Verb	Adverb
pacesetter	Yes	No	No	No
exemplar	Yes	No	No	No

As nouns, exemplar is a hypernym of pacesetter; that is, exemplar is a word with a broader meaning than pacesetter:

Other hypernyms of pacesetter include example, good example, model.

pacesetter (noun)	exemplar (noun)
a horse used to set the pace in racing	something to be imitated
a leading instance in its field