increment vs broadening

increment and broadening both are nouns.

Word	Noun	Adjective	Verb	Adverb
increment	Yes	No	No	No
broadening	Yes	No	No	No

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

increment: a process of becoming larger or longer or more numerous or more important
broadening: an increase in width

increment (noun)	broadening (noun)
the amount by which something increases	the action of making broader
a process of becoming larger or longer or more numerous or more important	the act of making something wider
	an increase in width