trailblazer vs groundbreaker

trailblazer and groundbreaker both are nouns.

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

As nouns, trailblazer and groundbreaker are synonyms defined as:

trailblazer and groundbreaker: someone who helps to open up a new line of research or technology or art

Other synonyms of trailblazer include innovator, pioneer.

trailblazer (noun)	groundbreaker (noun)
someone who marks a trail by leaving blazes on trees	someone who helps to open up a new line of research or technology or art
someone who helps to open up a new line of research or technology or art