Explanition:)Nouns can be singular (referring to one) or plural (referring to more than one). Regular nouns typically form the plural by adding "-s" or "-es". Irregular nouns, however, don't follow this pattern and have different plural forms. examples:Regular Nouns (Examples):Adding -s: cat -> cats, book -> books, car -> carsAdding -es (for nouns ending in -s, -sh, -ch, -x, -z): box -> boxes, bus -> buses Irregular Nouns (Examples):Changing vowels: man -> men, woman -> women, tooth -> teeth, foot -> feet, mouse -> mice, goose -> geese Adding -en: child -> children, ox -> oxen Same singular and plural: sheep, fish, deer, moose Other changes: person -> people, cactus -> cacti Nouns that remain the same: some nouns ending in -f/-fe change to -ves in the plural (e.g., loaf -> loaves, wife -> wives), .