outlay vs pump priming

outlay and pump priming both are nouns.

Word	Noun	Adjective	Verb	Adverb
outlay	Yes	No	No	No
pump priming	Yes	No	No	No

As nouns, pump priming is a hyponym of outlay; that is, pump priming is a word with a more specific, narrower meaning than outlay:

outlay: the act of spending or disbursing money
pump priming: spending money raised by borrowing; used by governments to stimulate their economy

Other hyponyms of outlay include expending, expenditure, compensatory spending, deficit spending.

outlay (noun)	pump priming (noun)
the act of spending or disbursing money	introducing water into a pump to improve the seal and start the water flowing
money paid out; an amount spent	spending money raised by borrowing; used by governments to stimulate their economy