No, the word 'under' is not a noun.
The word 'under' is an adverb, an adjective, or a preposition.
Examples:
We looked for something to stand under when it started to rain. (adverb)
An under layer of red was used to contrast the lace. (adjective)
The puppy like to sit under the table at dinnertime. (preposition)
common noun
Yes, the noun 'empires' is a common noun, the plural form of the noun 'empire', a general word for any group of states or countries under a single supreme authority.
The word 'rouge' is a common noun unless it is used for something specific, such a Baton Rouge, Louisiana. It is not a collective noun; an appropriate collective noun under which it might be found could be makeup or colors.
Common
Common noun
Common
common noun
Yes, the noun 'empires' is a common noun, the plural form of the noun 'empire', a general word for any group of states or countries under a single supreme authority.
common noun
The word 'rouge' is a common noun unless it is used for something specific, such a Baton Rouge, Louisiana. It is not a collective noun; an appropriate collective noun under which it might be found could be makeup or colors.
The noun 'wildfire' is a singular, common, compound, concrete noun; a word for an outdoor fire that is not under control.
Common
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.
A common noun.
Most definitely a common noun.