ingathering vs postulation

ingathering and postulation both are nouns.

Word	Noun	Adjective	Verb	Adverb
ingathering	Yes	No	No	No
postulation	Yes	No	No	No

As nouns, postulation is a hypernym of ingathering; that is, postulation is a word with a broader meaning than ingathering:

ingathering: request for a sum of money
postulation: a formal message requesting something that is submitted to an authority

Other hypernyms of ingathering include petition, request.

ingathering (noun)	postulation (noun)
request for a sum of money	(logic) a declaration of something self-evident; something that can be assumed as the basis for argument
	a formal message requesting something that is submitted to an authority