trigger off vs pioneer

trigger off is not a noun while pioneer is a noun.

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

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

Other hypernyms of trigger off include initiate.

trigger off (noun)	pioneer (noun)
	one of the first colonists or settlers in a new territory
	someone who helps to open up a new line of research or technology or art

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