INTRODUCTION The subject and object of a sentence can either be a noun or a pronoun. A noun is the name of a person, an object, a place, idea, a living thing other than human beings, or an action. John (a person) a cat (a living thing) a pen (an object) love (an idea) walking (an action) A noun can be a generic term that stands for a group of similar things or a unique name for a single thing. a boy (generic) Martin (name) a cat (generic) Tom (name) There are many different categories that grammar teachers assign to nouns; here, I would like to classify them into just two for your convenience. The second category is if the noun is COUNTABLE or UNCOUNTABLE . The first category is if the noun is COMMON or PROPER . COUNTABLE VS UNCOUNTABLE Countable nouns means the nouns that have a plural version; they are the nouns that we can count as separate entities. a cat (cats, three cats, ten cats) a river (rivers, five rivers) a boy (boys, two boys) UNCOUNTABLE VS UNCOUNTABLE Uncountable nouns m

What is the difference between in school vs at school (at the school of someone), similarly, in college vs at college (at the college of someone). In School means the person is still a school student. Similarly, in college means the person is a college student. On the contrary, at school means the person (typically, the student who studies at the same school) is still physically present at the school. at the school means the person near or inside the school building for some reason other than regular education. Similarly, at the college means the person near or inside the college building for some reason other than regular education. Examples: My daughter is still in school. Two years later, she will be a college student. When I was in college, I was very studious. Hey Tom, I am at your school; come and get this package for you. My wife is at the college of our daughter. It is way past 6; my daughter is still at college hanging out with friends. I left my umbrella at the school.