Plural Nouns
Gender of the Nouns
Possessive case
Countable or Uncountable
100

bus

buses

100

a box

neuter

100

Form the possessive case: 

the answer,  the buyers

the answer of the buyers + the buyers' answer

100

chalk

uncountable

200

place

places

200

my friend

common

200

Form the possessive case:

the last leaf, the tree

the last leaf of the tree

200

coin

countable

300

colony

colonies

300

a giraffe

neuter

300

Form the possessive case: 

мнение врача

the opinion of the doctor + the doctor's opinion
300

watch

countable

400

key

keys

400

his aunt

feminine

400

Form the possessive case: 

сестра друга

sister of my friend + my friend's sister

400

glass

(стекло) uncountable +  (стакан) countable

500

mouse

mice

500

their nephew

musculine

500

Form the possessive case: 

сестра жены моего брата

sister of my brother's wife
500

paper

(бумага) uncountable +  (газета) countable

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