1. COUNTABLES
1.1. A countable noun can be used with "a" or "an" and can be made plural
1.1.1. Examples:dog, cat, animal, man, person. bottle, box, litre. coin, note, dollar. cup, plate, fork. table, chair, suitcase, bag.
2. QUANTIFIERS
2.1. This quantifier can be used with both countable and uncountable nouns. As opposed to “much” or “many”, “a lot” is not generally used in interrogative sentences. In general, the use of “lots of” is more informal.
2.1.1. Examples: I saw few people in the program. Jack has many friends here. I have written articles on several. Jeff went to many places regarding this project. There was a lot of people in the concert. Alice had some fruits only. Lisa has much knowledge about this topic. We have enough food in the refrigerator.
3. UNCONTABLES
3.1. An uncountable noun is not used with "a" or "an" and cannot be made plural
3.1.1. Examples:music, art, love, happiness. advice, information, news. furniture, luggage. rice, sugar, butter, water. electricity, gas, power. money, currency.
4. SINGULAR/ PLURAL
4.1. Plural: A word or form that expresses more than one. Singular: Of or relating to the form of a word used when talking or writing about one thing
4.1.1. PLural:cats, houses, trusses,buses, marshes, lunches, taxes, blitzes
4.1.2. Singular: Girl, boy, mother, city, town, state.