The word copyright is a singular uncountable noun.
The word team is singular; the plural form is teams.
These is plural, this is singular
Lance is singular. Lances is plural.
The word metastasis is singular, metastases is plural.
The word "louse" is singular. The plural form is "lice."
No, the word "list" is singular. The plural form of "list" is "lists."
Caveman is singular. Cavemen is plural.
It's singular. The plural is cafeterias.
Verbs cannot be singular or plural. Has is after singular nouns.
Tool is singular. Tools is plural.
Both singular and plural.
Singular Plural is caterpillars