Yes, the noun "lamp" is countable. You can have one lamp, two lamps, three lamps, etc.
The prefix for countable is "dis-" as in "discountable."
Sandwich is countable. You can have one sandwich, two sandwiches, etc.
"Toothbrush" is countable because you can refer to one toothbrush or multiple toothbrushes.
Yes, the noun 'road' is a countable noun. The plural form of roads.
The noun "sausage" is countable. You can have one sausage, two sausages, etc.
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
few is countable
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.