New Sun Moon - In English language, 🔤 some words do not follow the rules for regular plurals. This is why these words are called 👉🏻 "irregular plurals" Irregular plurals are nouns
A Huge List of Singular and Plural Nouns words » Onlymyenglish.com
Nouns Without Plural Form
Singular Vs. Plural Nouns | Thesaurus.com
English Nouns Keeping Foreign Plurals | Download Table