It can be. It can be used as a noun or a verb.
No, violin is not a proper noun. A proper noun is a noun that has been given a name or title. For example, while the word store would not be a proper noun, the word Walmart would be, because it is the name of a specific store. A noun that is not a proper noun would be called a common noun.
The noun form of the word 'quantifies' is 'quantification.' A noun which would be quantified by someone would be a quantity.
Proper Noun
the noun would be treachery.
The noun would be Compensator
No. As a noun, harvest would be considered a common noun.
No, it is a plural noun. The common noun would be apple.
The equivalent noun would be honesty.
The proper noun Phoenix (city in Arizona) is a concrete noun. The common noun phoenix would be a mythological creature, which if encountered would also be a concrete noun.
No. It is not. I am not sure what it is, but not a noun. A noun would be "dog, cat, house, person, man, woman" etc.. A proper noun would be a name of a person or place.
No, it is not a noun. Arid is an adjective. The noun forms would be aridness or aridity.
The singular form of the noun is stapler. The singular posessive form of the noun would be stapler's. The plural form of the noun would be staplers. The plural posessive form of the noun would be staplers'