paying vs stipendiary

paying is not a noun while stipendiary is a noun.

Word	Noun	Adjective	Verb	Adverb
paying	No	Yes	No	No
stipendiary	Yes	Yes	No	No

As adjectives, paying and stipendiary are synonyms defined as:

Other synonyms of paying include compensable, remunerative, salaried.

paying (noun)	stipendiary (noun)
	(United Kingdom) a paid magistrate (appointed by the Home Secretary) dealing with police cases

paying (adjective)	stipendiary (adjective)
for which money is paid	pertaining to or of the nature of a stipend or allowance
yielding a fair profit	for which money is paid
	receiving or eligible for compensation