Difference between Gargantuan and Elephantine

GARGANTUAN vs ELEPHANTINE: ADJECTIVE

Of great mass; huge and bulky
Of exceedingly great scope or nature.
Characteristic of Gargantua, a gigantic, wonderful personage; enormous; prodigious; inordinate.
Of the giant Gargantua or his appetite.
Huge; immense; tremendous.
Of a tremendous size, volume, degree, etc.
Of immense size, extent, or quantity. : enormous.

Of great mass; huge and bulky
Of or relating to an elephant.
Enormous in size or strength.
Ponderously clumsy.
Pertaining to the elephant, or resembling an elephant (commonly, in size); hence, huge; immense; heavy
The epoch distinguished by the existence of large pachyderms.
A huge land tortoise; esp., Testudo elephantina, from islands in the Indian Ocean; and T. elephantopus, from the Galapagos Islands.
Of, pertaining to, or characteristic of elephants.
Very large.

Pertaining to or characteristic of Gargantua (see etymology); hence, great beyond credibility; enormous; prodigious; Brobdingnagian.
Of great mass
Huge and bulky

Huge and bulky
Of great mass
Made or consisting of ivory. See chryselephantine.
Hence Elephant-like; huge; immense; heavy; clumsy: as, he was of elephantine proportions; elephantine movements.
Pertaining to the elephant; resembling an elephant.

Ginormous, Mammoth, Monstrous, Colossal, Humongous, Vast, Enormous, Huge, Massive, Gigantic, Jumbo, Big, Giant, Large, Elephantine

Overlarge, Leviathan, Puny, Behemoth, Humongous, Colossal, Mammoth, Gigantic, Brobdingnagian, Ungainly, Big, Jumbo, Large, Giant, Gargantuan

Ginormous, Mammoth, Monstrous, Colossal, Humongous, Vast, Enormous, Huge, Massive, Gigantic, Jumbo, Big, Giant, Large, Elephantine

Overlarge, Leviathan, Puny, Behemoth, Humongous, Colossal, Mammoth, Gigantic, Brobdingnagian, Ungainly, Big, Jumbo, Large, Giant, Gargantuan

And whilst on Elephantine, a visit to the small, nondescript museum is in order.
Sonso, Veracruz State, Mexico, that shows a human with an apparently elephantine head.
It has stumpy, elephantine hind feet and shovellike forelimbs adapted for digging.
Many made their way elsewhere, such as Egypt, or Elephantine Island.
Destroying the Judean Temple on Elephantine: An Act of Religious Persecution?
Vancouver, a deal that proved too elephantine for the Canucks.
And Australia remained undiscovered below God Ganesha's elephantine nose.
American literature has had its share of elephantine books.
Of, from, or pertaining to Elephantine or the Elephantine people.
Elephantine papyri, requesting the rebuilding of a Jewish temple at Elephantine.