Nouns. Tip #6: Plural Nouns
Plural nouns, unlike collective nouns, require plural verbs. Many English plural nouns can be formed by adding -s or -es to the singular form, although there are many exceptions.
Example: cat—cats
Example: These two cats are both black.- Эти две кошки обе черные.
Note the plural verb is “are”.
Example: tax—taxes
Example: house—houses