subtreasury vs treasury

subtreasury and treasury both are nouns.

Word	Noun	Adjective	Verb	Adverb
subtreasury	Yes	No	No	No
treasury	Yes	No	No	No

As nouns, treasury is a hypernym of subtreasury; that is, treasury is a word with a broader meaning than subtreasury:

Other hypernyms of subtreasury include exchequer.

subtreasury (noun)	treasury (noun)
a subordinate treasury or place of deposit	a depository (a room or building) where wealth and precious objects can be kept safely
	the government department responsible for collecting and managing and spending public revenues
	the funds of a government or institution or individual