trailblazer vs pathfinder

trailblazer and pathfinder both are nouns.

Word	Noun	Adjective	Verb	Adverb
trailblazer	Yes	No	No	No
pathfinder	Yes	No	No	No

As nouns, pathfinder is a hypernym of trailblazer; that is, pathfinder is a word with a broader meaning than trailblazer:

Other hypernyms of trailblazer include guide, scout.

trailblazer (noun)	pathfinder (noun)
someone who marks a trail by leaving blazes on trees	someone who can find paths through unexplored territory
someone who helps to open up a new line of research or technology or art