Difference between Sizeable and Ample

SIZEABLE vs AMPLE: ADJECTIVE

Fairly large
Affording an abundant supply
More than enough in size or scope or capacity
Of large or great size, amount, extent, or capacity: : spacious.
Fully sufficient to meet a need or purpose: : plentiful.
Plump or bulky.
Large; great in size, extent, capacity, or bulk; spacious; roomy; widely extended.
Fully sufficient; abundant; liberal; copious
Not contracted of brief; not concise; extended; diffusive.
Not contracted or brief; not concise; extended; diffusive; as, an ample narrative.

Fairly large in size
Synonyms Ample, Copious, Plenteous, spacious, roomy, extensive, extended, wide, capacious, abundant, sufficient, full, enough, unrestricted, plenary, unstinted. (See lists under abundant and large.) Ample, in its more common uses, has reference to the sufficiency of the supply for every need; copious carries with it the idea of the unfailingness of the source; while plenteous usually indicates largeness of quantity in actual possession: as, ample stores or resources; a copious supply of materials; a plenteous harvest.
Fully sufficient for any purpose, or for the purpose specified; abundant; liberal; plentiful: as, ample provision for the table.
Large in kind or degree; having full scope or extent; copious; unrestricted; unrestrained: as, an ample narrative; to give ample praise, or do ample justice.
Large in dimensions; of great size, extent, capacity, or bulk; wide; spacious; extended.

Enormous, Massive, Significant, Huge, Substantial, Tidy, Goodish, Respectable, Ample, Goodly, Big, Hefty, Considerable, Large, Sizable

Adequate, Wide cut, Rich, Big, Wide, Generous, Good, Large, Plenteous, Full, Sizeable, Sizable, Plentiful, Copious, Abundant

Enormous, Massive, Significant, Huge, Substantial, Tidy, Goodish, Respectable, Ample, Goodly, Big, Hefty, Considerable, Large, Sizable

Adequate, Wide cut, Rich, Big, Wide, Generous, Good, Large, Plenteous, Full, Sizeable, Sizable, Plentiful, Copious, Abundant

Size is more than ample for each company.
The Schema Pro has ample space for widgets.
In these cases the court have ample discretion.
Plan for ample elements of fun and humor.
Kagan will be given ample opportunity to respond.
The eve is celebrated in ample different ways.
Toilet facilities and ample car parking for customers.
Property features ample parking in sprawling onsite lot.
Ample study material: There is ample study material available for this subject.
Strong whitetail and turkey populations, with ample cover and ample food sources for both.