The caffeine content of coffee varies greatly, depending on the beans, how they're roasted, and other factors, but the average for an 8-ounce cup is about 100 milligrams (mg).
No, 'cat' is a common noun, a word for any cat of any kind. A proper noun is the name of a person, a place, a thing, or a title; for example: Cat Deeley, host of TV series 'So You Think You Can Dance'.
What is a Common Noun. A noun is a word that names a person, animal, place, thing, or idea. All nouns can be further classified as proper or common. Common nouns are words used to name general items rather than specific ones.n the sentences that follow, common noun examples are italicized. Notice that the examples providing proper nouns name specific versions of the same type of person, animal, place, thing, or idea. 1  Common Noun: You broke my favorite mug.