largeness vs ampleness

largeness and ampleness both are nouns.

Word	Noun	Adjective	Verb	Adverb
largeness	Yes	No	No	No
ampleness	Yes	No	No	No

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

largeness (noun)	ampleness (noun)
the property of having a relatively great size	the property of impressive largeness in size
large or extensive in breadth or importance or comprehensiveness	the property of being more than sufficient; comfortable sufficiency
the quality of being pretentious (behaving or speaking in such a manner as to create a false appearance of great importance or worth)
the capacity to understand a broad range of topics