Compare each case across both numbers. The forms below are the noun's stored reference paradigm.
Singular and plural case forms for союз
Case
Singular
Plural
Nominative
союз
союзы
Accusative
союз
союзы
Genitive
союза
союзов
Dative
союзу
союзам
Instrumental
союзом
союзами
Prepositional
союзе
союзах
Form pattern
How the forms are built
The paradigm above is authoritative. These notes expose a transparent ending change only when the stored declension family supports one.
Genitive · Singularсоюз- + -а → союза
Keep the stored stem and add -а.
Show all case-build notes
Nominative · Singularсоюз
This is the dictionary form used to identify the noun.Nominative · Pluralсоюз- + -ы → союзы
Keep the stored stem and add -ы.Accusative · Singularсоюз- + zero ending → союз
Remove the zero ending; this form has a zero ending.Accusative · Pluralсоюз- + -ы → союзы
Keep the stored stem and add -ы.Genitive · Singularсоюз- + -а → союза
Keep the stored stem and add -а.Genitive · Pluralсоюз- + -ов → союзов
Keep the stored stem and add -ов.Dative · Singularсоюз- + -у → союзу
Keep the stored stem and add -у.Dative · Pluralсоюз- + -ам → союзам
Keep the stored stem and add -ам.Instrumental · Singularсоюз- + -ом → союзом
Keep the stored stem and add -ом.Instrumental · Pluralсоюз- + -ами → союзами
Keep the stored stem and add -ами.Prepositional · Singularсоюз- + -е → союзе
Keep the stored stem and add -е.Prepositional · Pluralсоюз- + -ах → союзах
Keep the stored stem and add -ах.