trigger vs pioneer

trigger and pioneer both are nouns.

Word	Noun	Adjective	Verb	Adverb
trigger	Yes	No	Yes	No
pioneer	Yes	No	Yes	No

As verbs, pioneer is a hypernym of trigger; that is, pioneer is a word with a broader meaning than trigger:

Other hypernyms of trigger include initiate.

trigger (noun)	pioneer (noun)
an act that sets in motion some course of events	one of the first colonists or settlers in a new territory
lever that activates the firing mechanism of a gun	someone who helps to open up a new line of research or technology or art
a device that activates or releases or causes something to happen

trigger (verb)	pioneer (verb)
release or pull the trigger on	open up and explore a new area
put in motion or move to act	open up an area or prepare a way
	take the lead or initiative in; participate in the development of