stipend vs regular payment

stipend and regular payment both are nouns.

Word	Noun	Adjective	Verb	Adverb
stipend	Yes	No	No	No
regular payment	Yes	No	No	No

As nouns, regular payment is a hypernym of stipend; that is, regular payment is a word with a broader meaning than stipend:

stipend: a sum of money allotted on a regular basis; usually for some specific purpose
regular payment: a payment made at regular times

stipend (noun)	regular payment (noun)
a sum of money allotted on a regular basis; usually for some specific purpose	a payment made at regular times