undertake vs pioneer

undertake is not a noun while pioneer is a noun.

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

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

Other hypernyms of undertake include initiate.

undertake (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

undertake (verb)	pioneer (verb)
promise to do or accomplish	open up and explore a new area
enter into a contractual arrangement	open up an area or prepare a way
enter upon an activity or enterprise	take the lead or initiative in; participate in the development of
accept as a charge
accept as a challenge