groundbreaker vs trailblazer

groundbreaker and trailblazer both are nouns.

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

As nouns, groundbreaker and trailblazer are synonyms defined as:

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

Other synonyms of groundbreaker include innovator, pioneer.

groundbreaker (noun)	trailblazer (noun)
someone who helps to open up a new line of research or technology or art	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