One antonym would be abundance.
Yes, the word 'scarcity' is a noun, a word for an insufficiency of amount or supply; a shortage; a word for a thing.
There is lot of water scarcity in my locality.
Antonyms are 'a few, lack, little, need, scarcity, want'
Yes, the word 'insufficiency' is a synonym for 'scarcity'. Other synonyms are: shortage, dearth, or lack.
Dearth
scarcity
Abundance.
No, they have opposite meanings
Glut.
The scarcity of the books in the library shocked me.
shortage scarcity
Yes, the word 'scarcity' is a noun, a word for an insufficiency of amount or supply; a shortage; a word for a thing.
There is lot of water scarcity in my locality.
No, "dearth" means a scarcity or lack of something, while "abundance" means a large quantity or plenty of something. They are essentially opposite in meaning.
Scarcity
It is a noun.
Antonyms are 'a few, lack, little, need, scarcity, want'