increase vs indefinite quantity

increase and indefinite quantity both are nouns.

Word	Noun	Adjective	Verb	Adverb
increase	Yes	No	Yes	No
indefinite quantity	Yes	No	No	No

As nouns, indefinite quantity is a hypernym of increase; that is, indefinite quantity is a word with a broader meaning than increase:

increase (noun)	indefinite quantity (noun)
the act of increasing something	an estimated quantity
the amount by which something increases
a change resulting in an increase
a process of becoming larger or longer or more numerous or more important
a quantity that is added

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