Dear friends 👋, this table with examples of singular nouns in the Instrumental case is mainly focused on their spelling and stress.
As you can see from the table, the Instrumental case-forms of SINGULAR nouns take these inflexions:
👉 -о́й/-ёй (stressed) or -ой/-ей (unstressed) for all nouns ending in their Nominative case-forms in -а/-я (1st declension);
👉 -о́м/-ём (stressed) or -ом/-ем (unstressed) for masculine nouns not ending in -а/-я in their Nominative case-forms and for neuter gender nouns (2nd declension);
👉 -ю (unstressed) for feminine nouns ending in their Nominative case-form in the soft sign -ь (3rd declension).Available in PDF: https://www.buymeacoffee.com/selfstudru8/e/132853
PLURAL noun forms are not included in the post for the reason of their simplicity. In short, plural nouns (all genders) in the Instrumental case take these inflexions:
👉 -ами after all hard consonants (ножа́ми, о́кнами, рука́ми), including the two soft fricatives «ч» and «щ» (плеча́ми, ро́щами), and
👉 -ями after all soft consonants other than «ч» and «щ» (деревня́ми, моря́ми, рубля́ми), as well as after vowels (алле́ями, зда́ниями, геро́ями) and after the soft sign -ь (се́мьями, кры́льями, друзья́ми).
✔️ EXCEPTIONS: детьми́, людьми́
For all the three declension types for nouns (i.e. for the inflexions taken by nouns in all the other cases, singular and plural), please, see: https://www.buymeacoffee.com/selfstudru8/declension-patterns