Good question!
Patient can be a noun or an adjective. If we are speaking about the noun, then patients would be the plural of patient.
Since adjectives do not have a plural form in English, then patient as an adjective would be patient even if the noun it modifies is plural.
-They are very patient when it comes to standing in line at a bank in Costa Rica
Patience is also a noun. People must have a lot of patience when they travel to a different country.
The word team is singular; the plural form is teams.
These is plural, this is singular
Lance is singular. Lances is plural.
The word 'Phenomenon' is singular. The plural form is 'Phenomena'.
The word metastasis is singular, metastases is plural.
The word "ground" can be both singular and plural. Singular: "The ground is wet." Plural: "The grounds of the park are well-maintained."
Louse is singular. The plural form is lice.
No, the word "list" is singular. The plural form of "list" is "lists."
It's 'my patience IS wearing thin'. It's singular, not 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.