Why are the terms First World and Third World, and Global North and Global South used interchangeably? Is it justifiable to use them as such?

i believe that is the truth if thats what you where asking for

what were the pronouns? did it use i, me, and my? if so, it was first person. if it had pronouns like you and your it was second person point of view. if it used he, she, and they, it was 3rd person point of view.

to the people and they all dies in the end