gigantism vs largeness

gigantism and largeness both are nouns.

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

As nouns, largeness is a hypernym of gigantism; that is, largeness is a word with a broader meaning than gigantism:

Other hypernyms of gigantism include bigness.

gigantism (noun)	largeness (noun)
excessive largeness of stature	the property of having a relatively great size
excessive size; usually caused by excessive secretion of growth hormone from the pituitary gland	large or extensive in breadth or importance or comprehensiveness
	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