Countable nouns-are those refer to something that can be counted.they have both singular and plural form(eg cat/cats;woman/women).in the singular thay can be preceded  by a or an.

un countable-thay may be a names for abstract ideas or qualities or for physical object that are too small or to long(liquids,gases,etc..)uncountable noun are used singular verb.
1 3 1
Things that can be easily counted or things which are countable are the countable nouns 
for ex: human beings, cake, sandwich, animals, birds etc
things which cannot be counted easily or things which are uncountable are the uncountable nouns
for ex: honey, sugar, juice, tea, coffee, water etc

hope so it will help u
2 5 2