hubby vs uxoricide

hubby and uxoricide both are nouns.

Word	Noun	Adjective	Verb	Adverb
hubby	Yes	No	No	No
uxoricide	Yes	No	No	No

As nouns, uxoricide is a hyponym of hubby; that is, uxoricide is a word with a more specific, narrower meaning than hubby:

Other hyponyms of hubby include benedick, benedict, cuckold, family man, house husband, househusband.

hubby (noun)	uxoricide (noun)
a married man; a woman's partner in marriage	the murder of a wife by her husband
	a husband who murders his wife