cataract

As a letter s

is the letter s with a.

As a noun cataract is

(obsolete) a waterspout.

As nouns the difference between cataclysm and cataract

is that cataclysm is a sudden, violent event while cataract is (obsolete) a waterspout.

As nouns the difference between calamity and cataract

is that calamity is an event resulting in great loss while cataract is (obsolete) a waterspout.

As nouns the difference between catastrophe and cataract

is that catastrophe is any large and disastrous event of great significance while cataract is a waterspout.

As nouns the difference between cataract and retinopathy

is that cataract is a waterspout while retinopathy is non-inflammatory disease of the retina.

As nouns the difference between tributary and cataract

is that tributary is (senseid) a natural water stream that flows into a larger river or other body of water while cataract is (obsolete) a waterspout.

As an adjective tributary

is related to the paying of tribute.

In pathology terms the difference between cataract and catarrh

is that cataract is a disease of the eye causing its opacity and, unless treated, leading to blindness while catarrh is inflammation of the mucous membranes of the nose and throat.

As nouns the difference between cataract and catarrh

is that cataract is a waterspout while catarrh is inflammation of the mucous membranes of the nose and throat.

As a verb casked

is (cask).

As a noun cataract is

(obsolete) a waterspout.

As nouns the difference between cataract and burn

is that cataract is a waterspout while burn is a physical injury caused by heat or cold or electricity or radiation or caustic chemicals.

As a verb burn is

to be consumed by fire, or at least in flames.

Cataract is a synonym of inundation.

As a noun cataract

is (obsolete) a waterspout.

As a proper noun inundation is

(egyptology) one of the three seasons of ancient egypt.