Yes, property is a countable noun.
Yes. the set of rational numbers is a countable set which can be generated from repeatedly taking countable union, countable intersection and countable complement, etc. Therefore, it is a Borel Set.
Yes, castle is a countable noun: We have two castles, one castle in the countryside and one castle on the ocean.
Yes, the noun 'octagon' is a countable noun, the plural form is octagons.Examples:An umbrella is a common form of an octagon. (singular)The pattern is a series of octagons in traditional colors. (plural)
The apex of roof is basically the highest point of the roof where ridge cap and ridge roll of a roof is located.
countable
The noun 'hill' is a countable noun. The plural form is 'hills'.
cookies are countable unless you have brain problems
countable
Prawn - prawns is the plural - is a countable noun
Shark is a countable noun.
Duck as an animal is countable, but if you mean the meat it is uncountable.
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.
Yes.