Juice is generally considered an uncountable noun because it refers to a liquid substance that cannot be divided into individual units. You would say "some juice" rather than "two juices." However, when referring to different types or brands of juice, you might use the term "juices" in a countable sense, such as "There are many juices available in the store."
countable
countable
The noun 'hill' is a countable noun. The plural form is 'hills'.
cookies are countable unless you have brain problems
countable
Shark is a countable noun.
Duck as an animal is countable, but if you mean the meat it is uncountable.
Prawn - prawns is the plural - is a countable noun
countable
few is countable
Countable
The word hair can be both a countable noun and a non countable noun, depending on how it is used. For example in the sentence "Mary has long blonde hair", it is non countable. In the sentence "Dad is getting a few gray hairs" it is countable.