increase vs broadening

increase and broadening both are nouns.

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

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

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

increase (noun)	broadening (noun)
the act of increasing something	the action of making broader
the amount by which something increases	the act of making something wider
a change resulting in an increase	an increase in width
a process of becoming larger or longer or more numerous or more important
a quantity that is added

increase (verb)	broadening (verb)
become bigger or greater in amount
make bigger or more