palimony vs support payment

palimony and support payment both are nouns.

Word	Noun	Adjective	Verb	Adverb
palimony	Yes	No	No	No
support payment	Yes	No	No	No

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

palimony: support paid by one half of an unmarried partnership after the relationship ends
support payment: a payment made by one person for the support of another

palimony (noun)	support payment (noun)
support paid by one half of an unmarried partnership after the relationship ends	a payment made by one person for the support of another