The word Jessica is singular noun, the name of a person. The noun Jessica is a proper noun; proper nouns are always capitalized.
The plural form is Jessicas, for example: There are two Jessicas in my class.
Singular Plural is caterpillars
The word crisis is singular. The plural form of crisis is crises.
Steroids is plural. The singular form of the word is steroid.
Association is singular. Associations is plural.
its singular there is no plural form of rendezvous
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