bondsperson vs helper

bondsperson and helper both are nouns.

Word	Noun	Adjective	Verb	Adverb
bondsperson	Yes	No	No	No
helper	Yes	No	No	No

As nouns, helper is a hypernym of bondsperson; that is, helper is a word with a broader meaning than bondsperson:

bondsperson: someone who signs a bond as surety for someone else
helper: a person who helps people or institutions (especially with financial help)

Other hypernyms of bondsperson include benefactor.

bondsperson (noun)	helper (noun)
someone who signs a bond as surety for someone else	a person who helps people or institutions (especially with financial help)
	a person who contributes to the fulfillment of a need or furtherance of an effort or purpose