The noun 'nebula' is singular, a word for one cloud of interstellar gas and dust.
There are two accepted forms for the plural: nebulae and nebulas.
No the word gazing is not a plural noun. The word gazing is not a noun at all but a verb. The singular noun form is gaze and the plural noun is gazes.
Skies is the plural form for the singular noun, sky.
Singular = astronaut, singular possessive = astronaut's. Plural = astronauts, plural possessive = astronauts'.
Tardies.Tardy is not plural tardy is an adjective and adjectives don't have plural or singular forms
Clouds of dust and gas in space are called nebulae, singular nebula. Using "nebulas" as the plural isn't exactly wrong as such, but nebulae is more traditional and makes people think you know Latin.
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 singular. The plural is cafeterias.
Verbs cannot be singular or plural. Has is after singular nouns.
Tool is singular. Tools is plural.
Caveman is singular. Cavemen is plural.